YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1962 | ----- | z | 72.43 | 75.26 | 93.30 | 91.55 | 103.07 | 108.45 | 110.94 | 103.00 | 92.26 | 82.03 | 72.32 | 91.33 | a | |||||||||||
1963 | 66.03 | 81.46 | 78.10 | 81.90 | 96.58 | 99.37 | 108.39 | 104.39 | 102.33 | 92.29 | 77.80 | 72.19 | 88.40 | |||||||||||||
1964 | 66.68 | 71.28 | 76.19 | 83.60 | 92.55 | 101.50 | 106.94 | 105.32 | 101.17 | 94.84 | 74.37 | 70.29 | 87.06 | |||||||||||||
1965 | 71.13 | 74.36 | 76.65 | 85.00 | 92.71 | 97.80 | 107.29 | 107.10 | 97.20 | 96.35 | 78.10 | 67.35 | 87.59 | |||||||||||||
1966 | 66.32 | 70.04 | 81.42 | 90.10 | 97.39 | 104.40 | 107.87 | 107.97 | 101.97 | 90.13 | 79.70 | 71.45 | 89.06 | |||||||||||||
1967 | 70.97 | 76.71 | 80.23 | 77.47 | 93.97 | 99.70 | 108.32 | 107.81 | 98.57 | 94.35 | 81.67 | 64.77 | 87.88 | |||||||||||||
1968 | 69.90 | 79.00 | 80.23 | 85.43 | 95.32 | 104.70 | 106.50 | a | 103.68 | 103.03 | 91.68 | 79.07 | 66.32 | 88.74 | ||||||||||||
1969 | 69.90 | 69.96 | 78.00 | 87.20 | 97.52 | 99.80 | 107.58 | 110.71 | 103.57 | 87.00 | 77.07 | 70.16 | 88.21 | |||||||||||||
1970 | 68.68 | 75.29 | 77.68 | 81.87 | 96.74 | 104.50 | 109.87 | 108.23 | 101.37 | 88.23 | 78.00 | 67.29 | 88.14 | |||||||||||||
1971 | 70.16 | 74.79 | 81.23 | 83.60 | 88.90 | 102.40 | 109.81 | 105.13 | 101.57 | 84.52 | 76.30 | 64.23 | 86.89 | |||||||||||||
1972 | 69.03 | 77.72 | 87.00 | 87.10 | 93.68 | 101.87 | 109.42 | 103.00 | 97.57 | 81.29 | 73.40 | 65.65 | 87.23 | |||||||||||||
1973 | 65.48 | 70.00 | 72.19 | 82.67 | 96.00 | 104.53 | 106.84 | 105.10 | 99.63 | 89.97 | 75.93 | 70.90 | 86.60 | |||||||||||||
1974 | 66.03 | 72.39 | 78.10 | 85.20 | 94.45 | 107.60 | 104.68 | 105.84 | 101.60 | 88.13 | 77.00 | 65.48 | 87.21 | |||||||||||||
1975 | 68.42 | 70.14 | 73.39 | 75.57 | 90.81 | 101.70 | 106.10 | 107.35 | 99.80 | 86.52 | 77.40 | 69.68 | 85.57 | |||||||||||||
1976 | 70.87 | 71.31 | 74.32 | 79.53 | 93.10 | 102.93 | 103.84 | 102.97 | 92.10 | 87.13 | 78.43 | 69.45 | 85.50 | |||||||||||||
1977 | 66.45 | 76.57 | 72.45 | 85.90 | 83.42 | 103.70 | 106.10 | 101.94 | 97.30 | 90.58 | 79.63 | 68.87 | 86.08 | |||||||||||||
1978 | 64.97 | 70.39 | 77.29 | 79.63 | 91.90 | 105.50 | 107.45 | 104.58 | 96.40 | 91.45 | 72.03 | 61.94 | 85.30 | |||||||||||||
1979 | 59.16 | 69.36 | 73.77 | 83.73 | 89.90 | 103.07 | 105.16 | 101.13 | 103.03 | 90.45 | 75.33 | 71.29 | 85.45 | |||||||||||||
1980 | 69.32 | 73.48 | 74.42 | 83.60 | 86.61 | 102.67 | 107.42 | 103.90 | 99.50 | 90.13 | 78.60 | 74.19 | 86.99 | |||||||||||||
1981 | 71.06 | 74.00 | 75.03 | 85.40 | 91.03 | 106.43 | 108.45 | 109.19 | 103.23 | ----- | z | ----- | z | ----- | z | 91.54 | c | |||||||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 106.47 | a | 101.73 | 84.82 | c | 72.33 | 72.35 | 87.54 | g | |||
2001 | 66.90 | 69.54 | 80.10 | 83.80 | 100.67 | a | 105.53 | 106.43 | a | 107.61 | 105.11 | b | 93.00 | 79.63 | 66.19 | 88.71 | ||||||||||
2002 | 68.13 | 75.32 | 77.42 | 86.37 | 94.61 | 106.43 | 108.45 | 107.81 | 103.17 | 88.00 | 80.07 | 68.90 | 88.72 | |||||||||||||
2003 | 77.23 | 70.32 | 79.97 | 80.73 | 93.87 | 102.77 | 107.90 | 105.45 | 103.43 | 95.90 | 72.43 | 68.94 | 88.25 | |||||||||||||
2004 | 69.26 | 69.24 | 86.90 | 86.17 | 95.90 | 102.60 | 107.26 | 106.42 | 100.13 | 85.23 | 71.93 | 67.90 | 87.41 | |||||||||||||
2005 | 68.32 | 69.11 | 78.48 | 85.00 | 95.77 | 101.63 | 109.35 | 106.03 | 103.00 | r | 89.19 | 79.57 | 71.55 | 86.73 | a | |||||||||||
2006 | 71.84 | 76.39 | 73.94 | 83.70 | 97.97 | 107.40 | 109.90 | 107.74 | 101.00 | 88.65 | 82.37 | 70.71 | 89.30 | |||||||||||||
2007 | 67.61 | 75.75 | 84.94 | 88.77 | 96.74 | 105.33 | 108.29 | 108.97 | 100.70 | 90.68 | 80.87 | 64.52 | 89.43 | |||||||||||||
2008 | 66.23 | 73.93 | 82.13 | 87.70 | 91.58 | 107.03 | 107.26 | 105.90 | 103.63 | 92.90 | 83.00 | a | 67.74 | 89.09 | ||||||||||||
2009 | 73.77 | 73.29 | 80.55 | 85.40 | 101.13 | 99.07 | 111.87 | 108.55 | 105.20 | 88.35 | 80.37 | 67.29 | 89.57 | |||||||||||||
2010 | 70.00 | 71.86 | 77.45 | 82.17 | a | 91.26 | 103.27 | 108.65 | 106.61 | 104.47 | 86.03 | 76.57 | 71.19 | 87.46 | ||||||||||||
2011 | 71.13 | 69.07 | 80.77 | 86.30 | 89.97 | 102.43 | 106.81 | 110.48 | 103.33 | 92.26 | 75.40 | 65.87 | 87.82 | |||||||||||||
2012 | 73.00 | 73.71 | a | 79.26 | 87.37 | 98.58 | 105.03 | 105.87 | 106.58 | 103.27 | 92.29 | 81.23 | 69.48 | 89.64 | ||||||||||||
2013 | 67.13 | 71.93 | 85.19 | 89.13 | 95.94 | 106.93 | 106.58 | 105.29 | 100.60 | 87.26 | 77.30 | 69.76 | b | 88.59 | ||||||||||||
2014 | 75.97 | 78.54 | 83.29 | 87.70 | 95.97 | 105.90 | 107.87 | 104.74 | 102.27 | 93.42 | 79.23 | 68.55 | 90.29 | |||||||||||||
2015 | 71.84 | 80.86 | 85.87 | 86.67 | 88.39 | 104.80 | 104.42 | 111.06 | 103.47 | 93.87 | 76.77 | 69.23 | 89.77 | |||||||||||||
2016 | 69.70 | a | 82.03 | 85.16 | 88.73 | 92.84 | 108.70 | 111.70 | a | 109.71 | 99.96 | b | 93.62 | b | 80.57 | 69.00 | 90.98 | |||||||||
2017 | 67.19 | 74.57 | 85.61 | 90.40 | 94.45 | 107.43 | 109.03 | 108.71 | 98.17 | 93.61 | 82.10 | 73.23 | 90.38 | |||||||||||||
2018 | 75.71 | 74.39 | 79.84 | 91.48 | a | 94.74 | 105.00 | 109.45 | 108.77 | a | 105.63 | 88.29 | 79.03 | 68.16 | 90.04 | |||||||||||
2019 | 67.32 | f | 62.43 | 78.15 | e | 89.37 | 87.67 | a | 102.97 | a | 108.26 | 110.06 | 100.17 | 89.16 | 79.43 | 65.45 | 88.47 | a | ||||||||
2020 | 71.71 | 72.74 | j | 73.57 | a | 87.41 | c | 98.45 | 102.33 | 110.16 | 111.10 | 105.83 | 95.67 | a | 79.93 | 70.26 | 91.49 | a | ||||||||
2021 | 70.35 | 74.89 | 76.68 | 90.57 | 95.68 | 107.40 | 108.19 | 107.23 | 102.50 | 87.10 | 84.10 | 70.00 | 89.56 | |||||||||||||
2022 | 71.35 | 73.79 | 81.90 | 89.13 | 96.03 | 105.47 | 108.00 | 106.84 | 100.87 | 90.62 | b | 73.23 | 69.12 | e | 88.86 | |||||||||||
2023 | 66.55 | 68.79 | 74.23 | 87.80 | 92.65 | 98.33 | 112.23 | e | 106.67 | a | 99.17 | a | 91.77 | 77.93 | 71.32 | 87.29 | ||||||||||
2024 | 68.29 | 71.62 | 76.26 | 85.57 | 89.36 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.43 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 69.28 | 73.30 | 78.88 | 85.57 | 93.84 | 103.74 | 107.92 | 106.84 | 101.34 | 90.21 | 78.08 | 68.85 | 88.13 | |||||||||||||
S.D. | 3.29 | 3.88 | 4.11 | 3.68 | 3.69 | 2.69 | 1.85 | 2.47 | 2.75 | 3.40 | 3.10 | 2.68 | 1.47 | |||||||||||||
SKEW | -0.07 | 0.11 | 0.35 | -0.48 | -0.50 | -0.32 | 0.16 | -0.16 | -0.91 | -0.29 | -0.36 | -0.37 | -0.22 | |||||||||||||
MAX | 77.23 | 82.03 | 87.00 | 93.30 | 101.13 | 108.70 | 112.23 | 111.10 | 105.83 | 96.35 | 84.10 | 74.19 | 90.98 | |||||||||||||
MIN | 59.16 | 62.43 | 72.19 | 75.57 | 83.42 | 97.80 | 103.84 | 101.13 | 92.10 | 81.29 | 71.93 | 61.94 | 85.30 | |||||||||||||
YRS | 42 | 43 | 44 | 44 | 43 | 43 | 43 | 44 | 43 | 43 | 43 | 43 | 38 |