| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1888 | 13.84 | 27.83 | 26.94 | 39.57 | 42.26 | 47.75 | n | 49.68 | 48.55 | 47.80 | 33.94 | 24.23 | 18.97 | 33.96 | a | |||||||||||
| 1889 | 10.19 | 14.21 | 25.00 | 32.03 | 38.26 | 47.33 | 55.16 | 51.90 | 50.44 | u | 20.00 | q | 27.63 | 29.87 | 33.16 | b | ||||||||||
| 1890 | 2.50 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.61 | 36.81 | 31.73 | 16.65 | 13.33 | 12.42 | 26.09 | f | ||||||
| 1891 | 10.73 | a | 8.81 | b | 18.48 | 24.43 | 33.45 | 39.76 | a | 52.19 | 55.58 | 44.09 | s | 35.65 | 30.20 | 17.53 | a | 29.71 | a | |||||||
| 1892 | ----- | z | 23.96 | a | 28.74 | 32.41 | a | 40.00 | f | 48.24 | a | 55.90 | a | 58.04 | f | 49.74 | g | 37.19 | 27.36 | h | 20.00 | 35.21 | e | |||
| 1893 | 23.78 | d | 19.93 | 24.97 | a | 30.20 | e | 38.40 | a | 49.55 | a | 55.71 | 56.68 | c | ----- | z | 41.43 | c | ----- | z | ----- | z | 37.85 | c | ||
| 1894 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1895 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1896 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1897 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1898 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1899 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1900 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1901 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1902 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1904 | 15.83 | y | 25.86 | a | 30.87 | a | 29.17 | a | 34.94 | 41.60 | 47.17 | b | 45.65 | 38.17 | 25.77 | 19.67 | 11.16 | 31.82 | a | |||||||
| 1905 | 13.50 | a | 15.22 | a | 19.68 | 24.33 | 27.32 | 38.45 | a | 47.06 | 45.00 | 36.23 | ----- | z | 16.83 | 7.61 | 26.48 | a | ||||||||
| 1906 | 10.52 | b | 16.96 | 16.39 | 22.30 | 28.90 | 37.23 | 50.74 | 53.97 | 45.33 | 35.87 | a | 23.57 | 22.74 | 30.38 | |||||||||||
| 1907 | 16.43 | a | 28.36 | 27.87 | a | 34.75 | b | 38.39 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.16 | g | ||
| 1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.97 | 26.82 | b | 17.14 | q | 31.89 | j | |
| 1916 | 18.42 | 27.03 | 30.19 | 37.17 | 39.84 | 49.17 | 56.39 | 54.68 | 48.90 | 34.50 | a | ----- | z | ----- | z | 39.63 | b | |||||||||
| 1917 | ----- | z | 18.77 | b | ----- | z | 30.07 | 36.58 | 49.43 | 59.29 | 52.94 | 45.70 | 38.94 | 32.10 | 28.19 | 39.20 | b | |||||||||
| 1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1939 | 21.68 | 15.11 | 31.68 | 38.23 | 44.45 | 51.60 | 59.65 | 59.39 | 50.57 | 38.84 | 33.67 | 28.39 | 39.44 | |||||||||||||
| 1940 | 25.13 | 26.79 | 31.50 | a | 37.13 | 47.65 | 56.53 | 59.42 | 59.13 | 49.23 | 40.87 | 27.63 | 25.06 | 40.51 | ||||||||||||
| 1941 | 24.42 | 29.96 | 29.42 | 31.23 | 44.10 | 49.50 | 56.23 | 54.65 | 43.57 | 34.71 | 29.80 | 24.06 | 37.64 | |||||||||||||
| 1942 | 20.81 | 20.18 | 23.90 | 34.77 | 38.97 | 55.90 | 61.52 | 56.61 | 49.17 | 41.81 | 30.93 | 27.81 | 38.53 | |||||||||||||
| 1943 | 24.29 | 27.36 | 30.52 | 40.93 | 44.68 | 48.17 | 58.29 | 56.58 | 52.17 | 40.74 | 30.23 | 25.84 | 39.98 | |||||||||||||
| 1944 | 18.59 | b | 21.97 | 25.45 | 32.90 | 41.20 | a | 46.90 | 57.10 | 57.87 | a | 51.73 | 42.03 | 27.97 | 24.65 | 37.36 | ||||||||||
| 1945 | 24.10 | 24.93 | 26.00 | 32.77 | 43.35 | 48.90 | 58.35 | 56.42 | 50.57 | 39.61 | 27.40 | 21.80 | a | 37.85 | ||||||||||||
| 1946 | 19.61 | 22.75 | 28.55 | 38.43 | 42.42 | 53.00 | 58.39 | 58.58 | 49.37 | 33.87 | 27.10 | 26.06 | 38.18 | |||||||||||||
| 1947 | 18.65 | 29.36 | 32.00 | 35.77 | 46.03 | 47.13 | 57.84 | 55.71 | 52.70 | 39.70 | a | 23.77 | 19.32 | 38.16 | ||||||||||||
| 1948 | 23.42 | 19.89 | a | 21.30 | a | 36.63 | 43.06 | 49.33 | 58.26 | 54.35 | 51.37 | 39.68 | 23.03 | 14.78 | d | 36.26 | ||||||||||
| 1949 | 8.55 | 13.68 | 28.39 | 39.73 | 43.48 | 52.70 | 57.65 | 54.97 | 50.83 | 35.94 | 33.97 | 20.48 | 36.70 | |||||||||||||
| 1950 | 17.77 | 27.04 | 27.48 | 35.50 | 42.45 | 50.67 | 58.29 | 56.32 | 49.27 | 44.39 | 31.47 | 28.03 | 39.06 | |||||||||||||
| 1951 | 20.84 | 23.61 | 26.32 | 36.57 | 44.26 | 50.77 | 59.06 | 56.29 | 50.63 | 38.81 | 27.27 | 19.97 | 37.87 | |||||||||||||
| 1952 | 19.58 | 20.93 | 23.48 | 37.13 | 43.87 | 49.40 | 59.48 | 60.37 | a | 52.07 | 43.90 | 24.70 | 23.97 | 38.24 | ||||||||||||
| 1953 | 28.29 | 23.04 | 29.10 | 34.00 | 36.81 | 50.00 | 60.13 | 58.03 | 52.03 | 38.48 | 31.70 | 20.13 | 38.48 | |||||||||||||
| 1954 | 22.03 | 28.04 | a | 25.20 | a | 39.07 | 46.52 | 50.27 | 59.29 | 56.29 | 48.90 | 38.77 | 31.50 | 21.55 | 38.95 | |||||||||||
| 1955 | 14.06 | 15.46 | 24.68 | 30.40 | 43.03 | 50.87 | 56.77 | 57.81 | 50.23 | 40.68 | 28.27 | 26.35 | 36.55 | |||||||||||||
| 1956 | 27.48 | 18.00 | 27.65 | 34.47 | 43.55 | 54.41 | a | 56.94 | 56.03 | 53.00 | 38.55 | 26.10 | 25.00 | 38.43 | ||||||||||||
| 1957 | 19.35 | 29.11 | 30.50 | a | 33.53 | 40.84 | 52.67 | 57.19 | 57.16 | 49.23 | 37.77 | 23.80 | 26.00 | 38.10 | ||||||||||||
| 1958 | 23.16 | 28.68 | 25.39 | 33.10 | 43.74 | 50.50 | 55.03 | 59.97 | 51.33 | 41.68 | 29.00 | 27.71 | 39.11 | |||||||||||||
| 1959 | 24.42 | 23.32 | 27.80 | a | 36.87 | 41.65 | 54.33 | 61.48 | 56.71 | 47.37 | 39.90 | 29.00 | 23.77 | 38.89 | ||||||||||||
| 1960 | 15.71 | 19.24 | 31.03 | 36.80 | 41.90 | 54.00 | 58.39 | 55.65 | 51.57 | 37.23 | 28.20 | 21.06 | 37.56 | |||||||||||||
| 1961 | 20.48 | 24.39 | 27.55 | 33.13 | 40.26 | 54.57 | 58.13 | 56.61 | 45.53 | 36.94 | 25.27 | 20.94 | 36.98 | |||||||||||||
| 1962 | 18.50 | a | 26.89 | 22.94 | 36.57 | 40.00 | 50.47 | 54.74 | 55.94 | 50.80 | 42.55 | 33.00 | 24.23 | 38.05 | ||||||||||||
| 1963 | 17.45 | 30.32 | 24.58 | 29.43 | 44.74 | 46.87 | 56.06 | 56.30 | a | 52.70 | 43.26 | 30.30 | 21.77 | 37.82 | ||||||||||||
| 1964 | 17.94 | 18.00 | 23.23 | 32.27 | 41.03 | 48.50 | 58.35 | 55.68 | 47.70 | 43.84 | 26.43 | 22.84 | 36.32 | |||||||||||||
| 1965 | 25.52 | 22.71 | 25.03 | 34.93 | a | 40.13 | 48.43 | 56.55 | 55.23 | 44.00 | 42.84 | 33.80 | 23.23 | 37.70 | ||||||||||||
| 1966 | 18.81 | 18.39 | 30.39 | 34.83 | 46.65 | 52.33 | 58.55 | 59.65 | 51.73 | 39.81 | 31.53 | 23.48 | 38.85 | |||||||||||||
| 1967 | 21.74 | 23.89 | 31.39 | 28.03 | 42.00 | a | 47.47 | 59.29 | 57.97 | 50.93 | 41.65 | 32.63 | 17.13 | 37.84 | ||||||||||||
| 1968 | 22.23 | 30.66 | 29.81 | 31.70 | 41.94 | 52.60 | 58.68 | 53.65 | 48.83 | 40.32 | 28.87 | 17.97 | 38.10 | |||||||||||||
| 1969 | 26.26 | 22.32 | 24.23 | 35.30 | 47.58 | 49.40 | 58.13 | 60.81 | 51.60 | 34.58 | 29.13 | 23.26 | 38.55 | |||||||||||||
| 1970 | 22.71 | 27.68 | 25.61 | 28.53 | 43.87 | 51.23 | 57.77 | a | 57.94 | 45.07 | 36.16 | 30.43 | 20.26 | 37.27 | ||||||||||||
| 1971 | 21.45 | 23.64 | 25.68 | 34.10 | 38.19 | 51.63 | 59.58 | 59.00 | 47.07 | 35.81 | 27.03 | 17.74 | 36.74 | |||||||||||||
| 1972 | 20.39 | 27.14 | 35.42 | 36.37 | 44.58 | 53.97 | 61.45 | 56.55 | 49.67 | 39.71 | 26.59 | a | 18.23 | 39.17 | ||||||||||||
| 1973 | 17.77 | 25.21 | 24.83 | a | 33.13 | 45.53 | a | 53.43 | 59.29 | 58.61 | 48.07 | 40.16 | 29.63 | 24.48 | 38.35 | |||||||||||
| 1974 | 17.90 | 22.39 | 32.23 | a | 34.37 | 46.60 | a | 56.50 | 58.81 | 56.77 | 52.33 | 41.29 | 30.43 | 20.90 | a | 39.21 | ||||||||||
| 1975 | 20.71 | 22.57 | 26.10 | a | 28.03 | a | 38.90 | 50.93 | b | 58.45 | 56.23 | 50.27 | 37.84 | 27.03 | a | 25.32 | 36.87 | |||||||||
| 1976 | 23.10 | 26.72 | 24.87 | 32.43 | 46.35 | 51.17 | 59.84 | 54.77 | 50.50 | 38.81 | 32.37 | 24.65 | 38.80 | |||||||||||||
| 1977 | 20.65 | 26.29 | 23.77 | 38.24 | a | 39.13 | a | 55.05 | j | 59.68 | 58.58 | 50.72 | a | 42.48 | 31.57 | 27.81 | 38.08 | a | ||||||||
| 1978 | 24.77 | 26.11 | a | 33.65 | 33.50 | 41.45 | 52.73 | 58.52 | 56.71 | 47.40 | 43.81 | 28.33 | 18.00 | 38.75 | ||||||||||||
| 1979 | 16.03 | 22.18 | 28.19 | 35.87 | 43.90 | 50.28 | a | 58.26 | 55.20 | a | 53.87 | 43.16 | 26.13 | 26.39 | 38.29 | |||||||||||
| 1980 | 26.52 | b | 29.00 | 26.10 | b | 35.50 | 39.06 | 50.40 | 58.70 | a | 56.94 | 50.73 | 40.58 | 31.77 | 30.29 | c | 39.63 | |||||||||
| 1981 | 26.84 | 25.14 | 28.71 | 39.63 | 43.10 | 56.80 | 61.58 | 58.55 | 52.37 | 36.71 | 33.87 | 27.26 | 40.88 | |||||||||||||
| 1982 | 20.61 | 24.36 | 27.43 | a | 31.97 | 42.42 | 49.23 | 57.65 | 58.06 | 48.23 | 35.23 | 27.10 | 22.06 | 37.03 | ||||||||||||
| 1983 | 24.61 | 26.18 | 29.87 | 29.73 | 39.84 | 50.50 | 57.26 | 56.42 | 52.27 | 40.07 | a | 29.33 | 25.29 | 38.45 | ||||||||||||
| 1984 | 22.16 | 23.34 | 28.37 | a | 31.77 | 48.06 | 50.90 | a | 58.45 | 57.03 | 50.77 | 35.20 | a | 29.17 | a | 21.45 | 38.06 | |||||||||
| 1985 | 19.06 | 19.56 | a | 27.48 | 39.40 | 45.03 | 55.03 | 60.10 | a | 58.13 | 47.00 | 38.48 | 26.24 | a | 25.33 | a | 38.40 | |||||||||
| 1986 | 29.42 | 28.61 | 34.32 | 36.10 | 44.19 | 55.30 | 56.55 | 60.06 | 45.37 | 37.42 | 31.20 | 24.52 | 40.25 | |||||||||||||
| 1987 | 20.13 | 24.89 | 28.03 | 39.30 | 44.45 | 54.53 | 56.68 | 57.48 | 50.57 | 43.97 | 30.03 | a | 20.13 | 39.18 | ||||||||||||
| 1988 | 20.00 | 26.21 | 27.55 | 35.86 | b | 42.15 | d | ----- | z | ----- | z | 56.75 | k | 48.77 | 46.68 | 30.40 | 19.81 | 33.05 | c | |||||||
| 1989 | 17.77 | a | 21.70 | a | 34.39 | 41.70 | 44.61 | 51.46 | d | 62.78 | d | 55.86 | b | 50.48 | a | 39.57 | a | 31.60 | 24.00 | j | 41.08 | a | ||||
| 1990 | 22.68 | f | 23.00 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 23.00 | k |
| 1991 | ----- | z | 30.19 | a | 27.37 | a | 35.32 | e | 40.29 | 52.27 | d | 61.84 | l | ----- | z | ----- | z | 41.66 | b | 28.56 | c | 24.28 | b | 34.99 | d | |
| 1992 | 21.61 | 30.11 | a | 32.52 | 41.29 | f | 48.34 | b | 53.24 | a | 59.03 | 61.55 | b | 52.48 | a | 45.05 | k | 24.50 | b | 16.85 | d | 40.02 | b | |||
| 1993 | 21.66 | b | 23.20 | c | 33.33 | m | 36.04 | b | 46.32 | 48.17 | a | 57.65 | 57.06 | 48.19 | d | 40.30 | a | 25.38 | a | 21.32 | 38.66 | a | ||||
| 1994 | 25.47 | a | 22.50 | 34.94 | 37.90 | 48.22 | h | 49.38 | a | 46.73 | a | 58.17 | b | 51.48 | a | 31.45 | 13.73 | 21.00 | a | 35.70 | a | |||||
| 1995 | 23.03 | 35.23 | b | 30.37 | d | 33.28 | e | 39.86 | b | 50.00 | e | 60.93 | a | 60.43 | a | 52.43 | b | 38.60 | p | 31.74 | k | 18.39 | c | 40.40 | b | |
| 1996 | 10.53 | a | 7.32 | d | 27.43 | c | 34.20 | e | 44.00 | 55.66 | a | 61.00 | 58.84 | 47.43 | 35.87 | 27.63 | 23.68 | c | 36.13 | |||||||
| 1997 | 20.29 | g | 19.88 | d | 31.44 | f | 30.76 | e | 47.77 | e | 51.00 | a | 57.19 | e | 57.71 | c | 49.48 | c | 35.56 | f | 28.08 | e | 18.12 | e | 40.00 | c |
| 1998 | 23.59 | d | 20.30 | e | 25.25 | g | 29.27 | d | 36.93 | b | 45.69 | d | 58.62 | b | 59.31 | b | 48.21 | a | 33.59 | d | 28.92 | d | 18.42 | g | 38.44 | b |
| 1999 | 23.52 | d | 24.00 | g | 25.00 | i | 26.79 | f | 39.09 | h | 54.07 | c | 57.55 | b | 55.62 | b | 47.92 | d | 41.00 | g | 32.70 | j | 20.44 | f | 47.74 | g |
| 2000 | 24.27 | e | 25.83 | f | 26.52 | b | 37.09 | h | 46.00 | f | 54.58 | d | 61.32 | c | 58.69 | b | 51.86 | a | 36.52 | f | 21.69 | a | 24.73 | a | 40.46 | d |
| 2001 | 18.69 | e | 20.76 | g | 31.33 | g | 30.79 | f | 48.38 | g | 55.00 | h | 57.60 | a | 59.37 | d | 52.12 | d | 41.25 | g | ----- | z | 18.17 | g | 46.94 | h |
| 2002 | 16.65 | h | 19.30 | h | 23.87 | h | 35.64 | e | 44.11 | d | 56.65 | d | 64.19 | e | 61.48 | b | 54.19 | d | 41.55 | b | 29.69 | d | 24.19 | 45.75 | c | |
| 2003 | 32.58 | 24.93 | 31.87 | 33.20 | 47.52 | 55.73 | 65.32 | 59.26 | 52.60 | 44.16 | 25.70 | 21.87 | 41.23 | |||||||||||||
| 2004 | 19.16 | 19.76 | 36.35 | 34.48 | g | 45.42 | 55.40 | 60.74 | 58.10 | 47.83 | 39.55 | 31.10 | a | 24.23 | a | 39.79 | a | |||||||||
| 2005 | 24.81 | d | 26.00 | a | 27.70 | a | 32.63 | 46.71 | 53.93 | a | 64.48 | 58.47 | l | 47.83 | r | 38.47 | n | 29.13 | o | 24.94 | o | 39.47 | e | |||
| 2006 | 24.05 | k | 23.95 | h | 29.36 | q | 36.82 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.43 | q | 32.27 | 16.70 | a | 24.48 | j | |
| 2010 | 23.48 | 23.73 | b | 28.55 | 33.57 | 38.73 | a | 53.93 | 62.58 | 57.77 | 50.97 | 42.65 | 27.87 | 27.16 | 39.25 | |||||||||||
| 2011 | 21.61 | 22.19 | a | 30.00 | d | 33.60 | 39.90 | 51.77 | 59.23 | 59.97 | 52.83 | 41.19 | 28.70 | 22.13 | 38.59 | |||||||||||
| 2012 | 23.87 | 24.17 | 31.10 | 38.73 | 47.35 | 56.43 | 60.39 | 60.94 | 53.33 | 41.84 | 33.87 | 22.77 | 41.23 | |||||||||||||
| 2013 | 19.10 | 22.68 | 33.48 | 36.37 | 44.55 | 57.70 | 62.87 | 58.65 | 51.33 | 37.45 | 30.87 | 19.45 | 39.54 | |||||||||||||
| 2014 | 27.39 | 27.36 | 31.13 | 37.70 | 45.52 | 56.40 | 63.10 | 57.10 | 53.87 | 44.19 | 30.23 | 26.13 | 41.68 | |||||||||||||
| 2015 | 27.27 | e | 29.50 | j | 34.74 | 36.93 | 43.26 | 57.13 | 57.57 | c | 60.39 | 55.23 | 44.81 | 24.96 | c | 20.26 | 42.05 | a | ||||||||
| 2016 | ----- | z | ----- | z | ----- | z | 36.50 | b | 43.06 | 58.23 | 60.19 | 63.04 | f | 55.70 | ----- | z | ----- | z | ----- | z | 50.74 | g | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 20.94 | 23.47 | 28.06 | 34.25 | 42.30 | 51.30 | 58.02 | 56.68 | 49.56 | 38.99 | 28.15 | 22.32 | 38.31 | |||||||||||||
| S.D. | 4.63 | 4.93 | 3.88 | 3.78 | 3.98 | 4.09 | 3.67 | 3.68 | 3.85 | 4.41 | 4.07 | 4.20 | 1.66 | |||||||||||||
| SKEW | -0.47 | -0.77 | -0.29 | -0.70 | -1.23 | -1.07 | -1.39 | -2.78 | -2.10 | -2.03 | -1.45 | -0.78 | -1.67 | |||||||||||||
| MAX | 32.58 | 35.23 | 36.35 | 41.70 | 48.34 | 58.23 | 65.32 | 61.55 | 55.70 | 46.68 | 33.97 | 30.29 | 41.68 | |||||||||||||
| MIN | 8.55 | 7.32 | 16.39 | 22.30 | 27.32 | 37.23 | 45.61 | 36.81 | 31.73 | 16.65 | 13.33 | 7.61 | 30.38 | |||||||||||||
| YRS | 77 | 79 | 76 | 79 | 79 | 79 | 82 | 79 | 78 | 75 | 78 | 77 | 56 | |||||||||||||