YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 101.00 | 97.00 | 90.00 | 80.00 | ----- | 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 | 98.00 | u | 96.00 | 93.00 | 85.00 | 65.00 | 63.00 | ----- | z | |||||
1958 | 64.00 | 70.00 | 72.00 | 86.00 | 95.00 | 100.00 | 103.00 | f | 100.00 | 97.00 | a | 84.00 | 74.00 | c | 72.00 | g | 103.00 | q | ||||||||
1959 | 65.00 | 68.00 | 75.00 | 86.00 | 91.00 | 98.00 | 98.00 | a | 96.00 | 95.00 | d | 84.00 | 70.00 | a | 59.00 | a | 98.00 | g | ||||||||
1960 | 58.00 | a | 66.00 | 76.00 | a | 85.00 | 90.00 | a | 99.00 | e | 100.00 | 98.00 | 93.00 | 82.00 | a | 70.00 | 57.00 | 100.00 | i | |||||||
1961 | 55.00 | a | 68.00 | 75.00 | a | 85.00 | 90.00 | a | 98.00 | 97.00 | 98.00 | a | 88.00 | 83.00 | b | 65.00 | b | ----- | z | ----- | z | |||||
1962 | 60.00 | 72.00 | 77.00 | 84.00 | 90.00 | a | 99.00 | 97.00 | 100.00 | a | 93.00 | a | 82.00 | 72.00 | c | 59.00 | b | 100.00 | h | |||||||
1963 | 68.00 | b | 72.00 | 80.00 | 86.00 | 89.00 | 98.00 | a | 100.00 | 93.00 | c | 92.00 | a | 83.00 | e | 70.00 | d | 57.00 | 100.00 | p | ||||||
1964 | 62.00 | 55.00 | b | 73.00 | 80.00 | 92.00 | a | 93.00 | a | 100.00 | 95.00 | 91.00 | a | 85.00 | b | 70.00 | 69.00 | 100.00 | g | |||||||
1965 | 68.00 | 69.00 | 73.00 | c | 88.00 | 89.00 | d | 95.00 | c | 96.00 | b | 95.00 | a | 88.00 | d | 84.00 | b | 72.00 | 62.00 | 96.00 | s | |||||
1966 | 57.00 | 62.00 | 80.00 | a | 84.00 | 89.00 | a | 92.00 | f | 98.00 | 98.00 | b | 90.00 | a | 81.00 | 71.00 | c | 70.00 | 98.00 | n | ||||||
1967 | 68.00 | 74.00 | 81.00 | d | 81.00 | 89.00 | d | 95.00 | b | 97.00 | d | 96.00 | b | 89.00 | b | 83.00 | e | 74.00 | b | 58.00 | f | ----- | z | |||
1968 | 63.00 | 70.00 | 76.00 | 78.00 | b | 91.00 | c | 100.00 | c | 98.00 | c | 88.00 | d | 90.00 | c | 85.00 | 71.00 | 58.00 | 100.00 | r | ||||||
1969 | 67.00 | 68.00 | a | 81.00 | b | 84.00 | b | 93.00 | a | 99.00 | a | 98.00 | a | 96.00 | c | 89.00 | a | 86.00 | 70.00 | 65.00 | 99.00 | l | ||||
1970 | 67.00 | a | 72.00 | 74.00 | a | 79.00 | 92.00 | c | 101.00 | 100.00 | 97.00 | a | 93.00 | c | 80.00 | 71.00 | 66.00 | 101.00 | i | |||||||
1971 | 70.00 | 70.00 | 84.00 | 85.00 | 88.00 | 98.00 | 100.00 | c | 91.00 | 93.00 | 80.00 | c | 72.00 | 59.00 | a | 100.00 | g | |||||||||
1972 | 69.00 | a | 75.00 | 80.00 | 87.00 | a | 88.00 | 98.00 | 102.00 | b | 99.00 | b | 86.00 | c | 86.00 | 66.00 | 67.00 | 102.00 | i | |||||||
1973 | 60.00 | 67.00 | 70.00 | 77.00 | 89.00 | a | 100.00 | c | 101.00 | d | 96.00 | 90.00 | d | 84.00 | 77.00 | 67.00 | 101.00 | l | ||||||||
1974 | 61.00 | 70.00 | 82.00 | 84.00 | 92.00 | e | 99.00 | d | 96.00 | 95.00 | 94.00 | a | 83.00 | a | 70.00 | 59.00 | e | 99.00 | p | |||||||
1975 | 74.00 | 68.00 | 74.00 | 80.00 | a | 87.00 | a | 95.00 | 96.00 | 95.00 | d | 92.00 | f | 83.00 | 78.00 | 61.00 | 96.00 | l | ||||||||
1976 | 63.00 | 73.00 | 79.00 | b | 80.00 | 91.00 | 95.00 | 94.00 | 96.00 | c | 90.00 | 79.00 | 72.00 | 55.00 | 96.00 | e | ||||||||||
1977 | 55.00 | b | 69.00 | 73.00 | 82.00 | 91.00 | b | 97.00 | 97.00 | a | 97.00 | 91.00 | 84.00 | d | 76.00 | a | 69.00 | a | 97.00 | k | ||||||
1978 | 60.00 | 68.00 | 77.00 | a | 83.00 | 90.00 | 100.00 | d | 97.00 | 96.00 | b | 90.00 | b | 85.00 | a | 74.00 | a | 63.00 | 100.00 | k | ||||||
1979 | 56.00 | a | 73.00 | 75.00 | 82.00 | 88.00 | 98.00 | 99.00 | 94.00 | 96.00 | 88.00 | a | 71.00 | 63.00 | a | 99.00 | c | |||||||||
1980 | 62.00 | 73.00 | 71.00 | a | 85.00 | 88.00 | 100.00 | 101.00 | 97.00 | 98.00 | 88.00 | 77.00 | 68.00 | 101.00 | a | |||||||||||
1981 | 64.00 | 77.00 | 76.00 | a | 87.00 | a | 86.00 | 102.00 | 100.00 | 97.00 | 89.00 | 79.00 | a | 75.00 | 70.00 | 102.00 | c | |||||||||
1982 | 66.00 | i | 73.00 | f | 76.00 | k | 83.00 | h | 89.00 | e | ----- | z | 97.00 | a | 94.00 | d | 95.00 | h | 85.00 | i | 68.00 | f | 61.00 | e | ----- | z |
1983 | 60.00 | f | 65.00 | f | 79.00 | h | 81.00 | f | 88.00 | h | 97.00 | c | 97.00 | a | 96.00 | 96.00 | k | 79.00 | k | 75.00 | l | 60.00 | ----- | z | ||
1984 | 62.00 | 70.00 | 78.00 | 86.00 | 93.00 | 95.00 | 97.00 | 95.00 | 94.00 | 81.00 | 76.00 | 58.00 | 97.00 | |||||||||||||
1985 | 60.00 | 70.00 | 77.00 | 84.00 | 90.00 | 100.00 | a | 101.00 | 96.00 | 90.00 | 83.00 | 77.00 | 68.00 | 101.00 | a | |||||||||||
1986 | 69.00 | 79.00 | 81.00 | 85.00 | 90.00 | 97.00 | 98.00 | 99.00 | 90.00 | 81.00 | 72.00 | 58.00 | 99.00 | |||||||||||||
1987 | 61.00 | 67.00 | 74.00 | 85.00 | 85.00 | 99.00 | 98.00 | 99.00 | 90.00 | 87.00 | 72.00 | a | 72.00 | 99.00 | a | |||||||||||
1988 | 62.00 | 71.00 | 76.00 | 82.00 | 96.00 | 97.00 | a | 100.00 | 95.00 | 92.00 | 83.00 | 80.00 | 62.00 | 100.00 | a | |||||||||||
1989 | 63.00 | 77.00 | a | 86.00 | 93.00 | 96.00 | 100.00 | a | 102.00 | 98.00 | 95.00 | 87.00 | 74.00 | 65.00 | 102.00 | b | ||||||||||
1990 | 66.00 | 69.00 | a | 82.00 | 89.00 | 90.00 | 104.00 | 98.00 | 95.00 | 93.00 | 83.00 | 75.00 | 64.00 | 104.00 | a | |||||||||||
1991 | 56.00 | 69.00 | 75.00 | 84.00 | 90.00 | 100.00 | 99.00 | 95.00 | 94.00 | 89.00 | 73.00 | 61.00 | 100.00 | |||||||||||||
1992 | 58.00 | 66.00 | 76.00 | 89.00 | 92.00 | 97.00 | 100.00 | 91.00 | 85.00 | 87.00 | 70.00 | a | 57.00 | 100.00 | a | |||||||||||
1993 | 64.00 | 70.00 | 78.00 | 85.00 | b | 90.00 | a | 102.00 | a | 101.00 | 100.00 | 92.00 | 88.00 | 73.00 | 64.00 | 102.00 | d | |||||||||
1994 | 73.00 | 72.00 | 81.00 | 87.00 | 94.00 | 107.00 | 103.00 | 101.00 | 92.00 | 80.00 | 67.00 | b | 54.00 | 107.00 | b | |||||||||||
1995 | 58.00 | a | 75.00 | 82.00 | 85.00 | 92.00 | 96.00 | 102.00 | 101.00 | 98.00 | 85.00 | 78.00 | 74.00 | 102.00 | a | |||||||||||
1996 | 70.00 | 75.00 | a | 77.00 | 91.00 | 98.00 | 101.00 | 102.00 | a | 101.00 | 94.00 | 93.00 | 77.00 | 68.00 | 102.00 | b | ||||||||||
1997 | 69.00 | 69.00 | 85.00 | 82.00 | a | 93.00 | 98.00 | 101.00 | 96.00 | 95.00 | 88.00 | 80.00 | 59.00 | 101.00 | a | |||||||||||
1998 | 64.00 | 71.00 | 83.00 | 84.00 | 92.00 | 105.00 | ----- | z | 99.00 | 97.00 | 87.00 | 72.00 | 66.00 | ----- | z | |||||||||||
1999 | 71.00 | 78.00 | 78.00 | 86.00 | 90.00 | 100.00 | 104.00 | 97.00 | 94.00 | 87.00 | 78.00 | 65.00 | 104.00 | |||||||||||||
2000 | 75.00 | a | 74.00 | 76.00 | 89.00 | 102.00 | 102.00 | 102.00 | 100.00 | 98.00 | 93.00 | 63.00 | 69.00 | 102.00 | a | |||||||||||
2001 | 58.00 | a | 71.00 | 82.00 | 85.00 | 96.00 | 101.00 | 100.00 | 99.00 | 95.00 | 89.00 | 83.00 | 65.00 | 101.00 | a | |||||||||||
2002 | 65.00 | 73.00 | 84.00 | 89.00 | 100.00 | 102.00 | 104.00 | 102.00 | 97.00 | 83.00 | 71.00 | 63.00 | 104.00 | |||||||||||||
2003 | 71.00 | 72.00 | 79.00 | 85.00 | 95.00 | 99.00 | 104.00 | 101.00 | 93.00 | 92.00 | 81.00 | 68.00 | 104.00 | |||||||||||||
2004 | 63.00 | 70.00 | 87.00 | a | 81.00 | 95.00 | 99.00 | 100.00 | 95.00 | 95.00 | 83.00 | 77.00 | 65.00 | 100.00 | a | |||||||||||
2005 | 68.00 | 65.00 | 79.00 | a | 84.00 | 100.00 | 102.00 | b | 103.00 | 98.00 | 100.00 | 86.00 | 77.00 | 70.00 | 103.00 | c | ||||||||||
2006 | 67.00 | 77.00 | 80.00 | 88.00 | 96.00 | 102.00 | 103.00 | 94.00 | 90.00 | 88.00 | 84.00 | 65.00 | 103.00 | |||||||||||||
2007 | 62.00 | a | 70.00 | 85.00 | 84.00 | 92.00 | 104.00 | 104.00 | a | 103.00 | 95.00 | 88.00 | 79.00 | 68.00 | 104.00 | b | ||||||||||
2008 | 61.00 | 75.00 | 80.00 | 87.00 | 98.00 | 103.00 | 101.00 | 103.00 | 96.00 | 87.00 | 78.00 | a | 70.00 | 103.00 | a | |||||||||||
2009 | 70.00 | 81.00 | 81.00 | 88.00 | 96.00 | a | 96.00 | a | 104.00 | 102.00 | 95.00 | 89.00 | 77.00 | 60.00 | 104.00 | b | ||||||||||
2010 | 62.00 | c | 64.00 | 86.00 | 82.00 | 93.00 | 105.00 | a | 103.00 | b | 100.00 | 95.00 | 90.00 | 75.00 | 70.00 | 105.00 | f | |||||||||
2011 | 65.00 | a | 75.00 | 82.00 | 93.00 | d | 98.00 | a | 102.00 | 103.00 | 101.00 | a | 99.00 | a | 85.00 | 78.00 | 63.00 | 103.00 | h | |||||||
2012 | 67.00 | 70.00 | 85.00 | 92.00 | a | 97.00 | 103.00 | 105.00 | 100.00 | 99.00 | 90.00 | 77.00 | 72.00 | 105.00 | a | |||||||||||
2013 | 65.00 | 65.00 | 82.00 | 88.00 | 95.00 | 108.00 | 100.00 | 98.00 | 100.00 | 86.00 | 73.00 | 70.00 | 108.00 | |||||||||||||
2014 | 71.00 | 78.00 | 80.00 | 86.00 | 96.00 | a | 103.00 | 103.00 | 95.00 | a | 97.00 | 87.00 | 79.00 | 68.00 | 103.00 | b | ||||||||||
2015 | 68.00 | 75.00 | 85.00 | 84.00 | 89.00 | 105.00 | 100.00 | 102.00 | 97.00 | 93.00 | 75.00 | 67.00 | 105.00 | |||||||||||||
2016 | 72.00 | 80.00 | 80.00 | 85.00 | 92.00 | a | 106.00 | 104.00 | a | 99.00 | a | 95.00 | 91.00 | 82.00 | 73.00 | 106.00 | c | |||||||||
2017 | 69.00 | 79.00 | 85.00 | 86.00 | 93.00 | 105.00 | 102.00 | 96.00 | 95.00 | 85.00 | 76.00 | 70.00 | 105.00 | |||||||||||||
2018 | 65.00 | 72.00 | 82.00 | 88.00 | 94.00 | 102.00 | 102.00 | 100.00 | 97.00 | 88.00 | 72.00 | 65.00 | 102.00 | |||||||||||||
2019 | 66.00 | 69.00 | 83.00 | 86.00 | 86.00 | 97.00 | 102.00 | 101.00 | 96.00 | 89.00 | 74.00 | 66.00 | 102.00 | |||||||||||||
2020 | 62.00 | 70.00 | 78.00 | 88.00 | 94.00 | 99.00 | 105.00 | 103.00 | 97.00 | 90.00 | 81.00 | 63.00 | 105.00 | |||||||||||||
2021 | 60.00 | 71.00 | 79.00 | 86.00 | 92.00 | 104.00 | 101.00 | 98.00 | 97.00 | 85.00 | 78.00 | 68.00 | 104.00 | |||||||||||||
2022 | 65.00 | 70.00 | 84.00 | 86.00 | 97.00 | 102.00 | 104.00 | 99.00 | 95.00 | 84.00 | 75.00 | 68.00 | 104.00 | |||||||||||||
2023 | 62.00 | 69.00 | 74.00 | 85.00 | 90.00 | 100.00 | 106.00 | 102.00 | 98.00 | 87.00 | 82.00 | 63.00 | 106.00 | |||||||||||||
2024 | 64.00 | 75.00 | 78.00 | 84.00 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 64.38 | 71.18 | 79.06 | 85.16 | 92.22 | 100.05 | 100.43 | 97.57 | 93.60 | 85.50 | 74.37 | 64.55 | 102.63 | |||||||||||||
S.D. | 4.79 | 4.49 | 4.11 | 3.26 | 3.65 | 3.23 | 2.70 | 3.06 | 3.45 | 3.47 | 4.50 | 4.76 | 2.38 | |||||||||||||
SKEW | 0.05 | -0.39 | -0.08 | 0.00 | 0.47 | 0.24 | -0.11 | -0.37 | -0.26 | 0.20 | -0.17 | -0.20 | -0.04 | |||||||||||||
MAX | 75.00 | 81.00 | 87.00 | 93.00 | 102.00 | 108.00 | 106.00 | 103.00 | 100.00 | 93.00 | 84.00 | 74.00 | 108.00 | |||||||||||||
MIN | 55.00 | 55.00 | 70.00 | 77.00 | 85.00 | 93.00 | 94.00 | 88.00 | 85.00 | 79.00 | 63.00 | 54.00 | 97.00 | |||||||||||||
YRS | 65 | 65 | 65 | 64 | 65 | 64 | 65 | 68 | 65 | 66 | 65 | 64 | 40 |