YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 114.00 | 104.00 | 111.00 | 100.00 | 104.00 | 82.00 | 80.00 | ----- | z | |||||||
1918 | 78.00 | 76.00 | 84.00 | 88.00 | 92.00 | 104.00 | 102.00 | 110.00 | 100.00 | ----- | z | 82.00 | 76.00 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | 103.00 | d | 102.00 | b | 107.00 | h | 116.00 | g | 105.00 | c | 98.00 | a | 99.00 | a | 82.00 | ----- | z | |
1998 | 80.00 | 70.00 | 86.00 | b | 93.00 | c | 85.00 | c | 101.00 | 113.00 | 115.00 | 103.00 | a | 91.00 | 85.00 | 84.00 | a | 115.00 | j | |||||||
1999 | 84.00 | 86.00 | 87.00 | 97.00 | c | 93.00 | 104.00 | a | 104.00 | b | 110.00 | 105.00 | 102.00 | a | 93.00 | 83.00 | b | 110.00 | i | |||||||
2000 | 85.00 | d | 86.00 | b | 85.00 | a | 97.00 | 106.00 | 110.00 | 109.00 | 109.00 | 110.00 | a | 95.00 | 83.00 | 83.00 | a | 110.00 | i | |||||||
2001 | 83.00 | b | 87.00 | 87.00 | a | 94.00 | a | 107.00 | a | 104.00 | a | 105.00 | a | 107.00 | 107.00 | 100.00 | a | 89.00 | 81.00 | 107.00 | h | |||||
2002 | 85.00 | a | 89.00 | 92.00 | 96.00 | a | 102.00 | 106.00 | 108.00 | a | 109.00 | 112.00 | 97.00 | b | 91.00 | 76.00 | a | 112.00 | f | |||||||
2003 | 90.00 | 79.00 | a | 86.00 | a | 86.00 | a | 109.00 | 104.00 | 109.00 | 108.00 | a | 107.00 | 101.00 | 85.00 | 81.00 | 109.00 | d | ||||||||
2004 | 82.00 | 82.00 | a | 96.00 | a | 100.00 | b | 102.00 | a | 98.00 | 106.00 | 109.00 | a | 105.00 | 98.00 | 75.00 | 84.00 | 109.00 | f | |||||||
2005 | 83.00 | a | 72.00 | 89.00 | 88.00 | 101.00 | 100.00 | a | 110.00 | 107.00 | 99.00 | a | 95.00 | b | 90.00 | a | 87.00 | 110.00 | f | |||||||
2006 | 85.00 | a | 86.00 | 80.00 | a | 89.00 | 99.00 | a | 107.00 | a | 115.00 | c | 107.00 | a | 108.00 | a | 97.00 | b | 94.00 | 81.00 | c | 115.00 | n | |||
2007 | 83.00 | a | 88.00 | 95.00 | 100.00 | 95.00 | a | 103.00 | 108.00 | 116.00 | a | 112.00 | 97.00 | b | 93.00 | 84.00 | b | 116.00 | g | |||||||
2008 | 78.00 | a | 83.00 | a | 87.00 | a | 97.00 | 104.00 | a | 112.00 | 107.00 | m | 105.00 | n | 106.00 | r | 99.00 | n | 90.00 | s | 75.00 | t | ----- | z | ||
2009 | 83.00 | 83.00 | 88.00 | 100.00 | 102.00 | 105.00 | 109.00 | 109.00 | 106.00 | 99.00 | 94.00 | 79.00 | a | 109.00 | a | |||||||||||
2010 | 79.00 | 81.00 | 87.00 | b | 89.00 | b | 92.00 | 101.00 | 111.00 | 115.00 | 112.00 | 100.00 | 98.00 | 84.00 | 115.00 | d | ||||||||||
2011 | 83.00 | 80.00 | g | 94.00 | 93.00 | 97.00 | 105.00 | 106.00 | 110.00 | 109.00 | 105.00 | 84.00 | 82.00 | 110.00 | g | |||||||||||
2012 | 85.00 | m | 82.00 | 86.00 | 97.00 | 103.00 | 99.00 | 109.00 | 109.00 | 102.00 | 105.00 | 91.00 | 79.00 | 109.00 | m | |||||||||||
2013 | 79.00 | 79.00 | 90.00 | d | 94.00 | 100.00 | 107.00 | 105.00 | 104.00 | 102.00 | 90.00 | 91.00 | 84.00 | 107.00 | d | |||||||||||
2014 | 85.00 | 87.00 | 86.00 | 91.00 | 101.00 | 100.00 | 108.00 | 102.00 | 104.00 | 101.00 | 89.00 | 77.00 | 108.00 | |||||||||||||
2015 | 79.00 | 82.00 | 88.00 | 91.00 | 94.00 | b | 102.00 | 96.00 | 105.00 | 102.00 | 98.00 | d | 87.00 | c | 81.00 | 105.00 | i | |||||||||
2016 | 73.00 | a | 85.00 | 83.00 | 95.00 | 92.00 | 111.00 | 107.00 | 104.00 | 102.00 | a | 93.00 | a | 90.00 | a | 77.00 | 111.00 | d | ||||||||
2017 | 74.00 | a | 82.00 | 88.00 | 92.00 | 97.00 | b | 106.00 | 106.00 | 108.00 | 107.00 | 98.00 | 91.00 | 83.00 | 108.00 | c | ||||||||||
2018 | 82.00 | 82.00 | 86.00 | 92.00 | 95.00 | 99.00 | 113.00 | 107.00 | 103.00 | 92.00 | 88.00 | 81.00 | 113.00 | |||||||||||||
2019 | 76.00 | 69.00 | 80.00 | 91.00 | b | 85.00 | a | 104.00 | 105.00 | 105.00 | 105.00 | 95.00 | 95.00 | 76.00 | 105.00 | c | ||||||||||
2020 | 79.00 | 82.00 | 83.00 | 95.00 | 99.00 | 100.00 | 108.00 | 111.00 | 113.00 | 104.00 | 94.00 | 82.00 | 113.00 | |||||||||||||
2021 | 87.00 | 80.00 | 87.00 | 96.00 | 95.00 | 109.00 | 104.00 | 108.00 | 106.00 | 93.00 | 92.00 | 85.00 | c | 109.00 | c | |||||||||||
2022 | 79.00 | 86.00 | e | 92.00 | a | 96.00 | 99.00 | 103.00 | 105.00 | 108.00 | 108.00 | 95.00 | 76.00 | 82.00 | 108.00 | f | ||||||||||
2023 | 70.00 | 76.00 | 73.00 | 95.00 | 93.00 | 102.00 | 107.00 | 104.00 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 80.92 | 81.54 | 86.85 | 93.78 | 97.93 | 104.21 | 107.11 | 108.58 | 105.70 | 97.81 | 88.93 | 81.26 | 109.73 | |||||||||||||
S.D. | 4.52 | 5.34 | 4.82 | 3.83 | 5.98 | 4.08 | 3.79 | 3.34 | 3.93 | 4.24 | 5.92 | 2.96 | 2.97 | |||||||||||||
SKEW | -0.45 | -0.89 | -0.51 | -0.18 | -0.34 | 0.66 | -0.45 | 0.43 | 0.23 | 0.04 | -0.64 | -0.39 | 0.33 | |||||||||||||
MAX | 90.00 | 89.00 | 96.00 | 100.00 | 109.00 | 114.00 | 115.00 | 116.00 | 113.00 | 105.00 | 99.00 | 87.00 | 115.00 | |||||||||||||
MIN | 70.00 | 69.00 | 73.00 | 86.00 | 85.00 | 98.00 | 96.00 | 102.00 | 99.00 | 90.00 | 75.00 | 76.00 | 105.00 | |||||||||||||
YRS | 26 | 26 | 27 | 27 | 28 | 29 | 27 | 26 | 27 | 26 | 27 | 27 | 11 |