YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1969 | ----- | z | 70.75 | 77.29 | 86.53 | 96.10 | 99.00 | 105.94 | 108.68 | 103.43 | 87.84 | 76.63 | 69.52 | 89.25 | a | |||||||||||
1970 | 68.42 | 75.82 | 77.29 | 82.20 | 95.94 | 102.43 | 107.68 | 106.26 | 100.00 | 88.03 | 79.23 | 68.16 | 87.62 | |||||||||||||
1971 | 70.10 | 75.46 | 82.58 | 84.93 | 89.42 | 101.43 | 106.81 | 103.06 | 102.07 | 84.16 | 76.60 | 65.19 | 86.82 | |||||||||||||
1972 | 69.19 | 78.28 | 89.77 | 89.20 | 95.42 | 102.97 | 109.35 | 104.48 | 99.80 | 84.00 | ----- | z | 67.45 | 89.99 | a | |||||||||||
1973 | 66.23 | 71.21 | 73.03 | 85.37 | 96.97 | 105.33 | 107.74 | 105.23 | 101.07 | 92.87 | 76.47 | 71.39 | 87.74 | |||||||||||||
1974 | 67.97 | 74.79 | 81.97 | 88.33 | 95.58 | 106.17 | 103.97 | 106.84 | 101.73 | 90.52 | 78.33 | 66.42 | 88.55 | |||||||||||||
1975 | 69.00 | b | 71.50 | 77.45 | 79.93 | 94.71 | 103.53 | 106.84 | 108.32 | 102.00 | 89.68 | 79.47 | 68.19 | 87.55 | ||||||||||||
1976 | 67.90 | 74.69 | 79.00 | 85.07 | 96.74 | 104.13 | 103.74 | 104.45 | 95.17 | 88.35 | 78.40 | 69.94 | 87.30 | |||||||||||||
1977 | 66.39 | 78.18 | 77.13 | 90.93 | a | 89.43 | a | 105.20 | 106.58 | 104.03 | 98.53 | 92.29 | 79.83 | 71.55 | 88.34 | |||||||||||
1978 | 65.94 | 72.07 | 81.29 | 85.70 | 96.30 | a | 106.70 | 108.23 | 105.58 | 100.00 | 92.03 | 74.13 | 63.13 | 87.59 | ||||||||||||
1979 | 60.74 | 71.57 | 76.33 | d | 90.23 | h | 94.00 | b | 104.63 | 107.77 | 103.37 | a | 106.04 | b | 93.29 | c | 75.47 | 71.10 | 87.66 | a | ||||||
1980 | 68.71 | 74.59 | 76.90 | a | 89.43 | b | 93.39 | 110.45 | a | 115.16 | 108.58 | 101.31 | a | 92.06 | 78.59 | c | 75.00 | 90.35 | ||||||||
1981 | 72.48 | 75.30 | a | 75.81 | 86.45 | a | 92.83 | g | 107.07 | c | 105.84 | 105.97 | a | 99.54 | b | 85.83 | a | 81.83 | 72.00 | 88.01 | a | |||||
1982 | 67.16 | 74.04 | a | 75.00 | 85.63 | 92.47 | a | 98.23 | 102.03 | a | 101.68 | 96.27 | 88.35 | 74.27 | 65.68 | 85.07 | ||||||||||
1983 | 70.68 | 70.96 | b | 76.24 | b | 81.10 | a | 94.52 | b | 101.30 | c | 104.90 | 99.52 | 99.90 | 89.35 | 77.90 | 69.45 | 86.32 | ||||||||
1984 | 70.16 | 74.24 | 81.07 | a | 81.90 | 97.71 | 97.87 | 100.77 | a | 100.81 | 99.50 | 83.39 | 73.60 | 62.90 | 85.33 | |||||||||||
1985 | 65.65 | 68.68 | 74.39 | 87.57 | 92.71 | 102.40 | 104.32 | 104.45 | 92.59 | a | 86.13 | 73.40 | 68.06 | 85.03 | ||||||||||||
1986 | 74.90 | 74.18 | 82.68 | 85.07 | 93.13 | 102.00 | 101.10 | 104.63 | a | 93.17 | 85.61 | 76.67 | 68.29 | 86.79 | ||||||||||||
1987 | 67.35 | 72.18 | 76.16 | 90.10 | 91.74 | 102.63 | 102.81 | 103.29 | 98.77 | 91.52 | 74.87 | 63.58 | 86.25 | |||||||||||||
1988 | 66.94 | 76.38 | 81.68 | 86.76 | a | 95.41 | b | 103.20 | 106.80 | a | 105.47 | a | 101.21 | a | 95.35 | 78.07 | 68.94 | 88.85 | ||||||||
1989 | 66.03 | 74.15 | a | 83.94 | 92.77 | 92.48 | 100.27 | 104.84 | 101.40 | a | 99.93 | 89.26 | 79.60 | 69.23 | 87.82 | |||||||||||
1990 | 67.29 | 70.54 | 80.94 | 85.93 | 89.81 | 102.66 | a | 102.61 | 101.33 | a | 98.83 | a | 91.19 | 77.97 | 65.35 | 86.20 | ||||||||||
1991 | 67.84 | 79.07 | 71.74 | 84.45 | a | 90.50 | c | 96.70 | 102.10 | 102.06 | 97.61 | b | 92.43 | a | 77.41 | c | 67.00 | 85.74 | ||||||||
1992 | 67.71 | 74.00 | 75.97 | b | 89.87 | 94.35 | 99.17 | a | 102.90 | 106.27 | a | 103.63 | 92.35 | 75.17 | a | 62.67 | a | 87.01 | ||||||||
1993 | 66.13 | 68.63 | a | 80.47 | a | 90.61 | b | 96.52 | 105.03 | a | 106.03 | 105.50 | a | 102.33 | 91.33 | a | 74.79 | a | 68.19 | 87.96 | ||||||
1994 | 71.58 | 70.71 | 81.52 | 88.17 | a | 94.46 | e | 108.63 | 109.45 | 109.77 | a | 103.90 | a | 89.38 | b | 71.86 | a | 65.77 | 88.77 | |||||||
1995 | 67.00 | a | 80.12 | b | 80.71 | 86.39 | b | 91.83 | a | 104.14 | b | 111.06 | 110.87 | 105.90 | 93.45 | 83.60 | 72.48 | 90.63 | ||||||||
1996 | 72.48 | 77.14 | 82.30 | a | 91.25 | b | 99.48 | b | 107.53 | 109.35 | 107.77 | 99.24 | a | 91.10 | b | 79.07 | a | 71.00 | 90.64 | |||||||
1997 | 69.57 | a | 73.11 | 86.97 | 86.66 | a | 101.50 | a | 101.07 | 107.57 | a | 107.81 | 103.33 | c | 88.39 | 78.24 | a | 64.20 | a | 89.03 | ||||||
1998 | 69.90 | a | 68.68 | 78.39 | 82.73 | 89.13 | 99.60 | 110.10 | 109.10 | 101.77 | 89.68 | 78.13 | 67.94 | 87.09 | ||||||||||||
1999 | 72.42 | 75.41 | a | 80.06 | 81.64 | b | 94.45 | 102.37 | 104.42 | 106.26 | 102.73 | 95.74 | 83.17 | 71.71 | 89.20 | |||||||||||
2000 | 73.74 | 75.45 | 78.84 | 91.90 | 100.29 | 104.43 | 108.65 | 106.19 | 103.53 | 86.32 | 71.47 | 71.84 | 89.39 | |||||||||||||
2001 | 67.29 | 70.43 | 80.58 | 85.03 | 102.19 | 106.20 | 106.39 | 106.84 | 105.47 | 93.48 | 80.90 | 66.83 | a | 89.30 | ||||||||||||
2002 | 69.80 | a | 76.75 | 78.94 | 89.27 | 95.55 | 107.47 | 108.97 | 108.32 | 103.73 | 88.55 | 80.50 | 67.67 | a | 89.63 | |||||||||||
2003 | 77.13 | 72.11 | 80.23 | 83.27 | 96.81 | 104.60 | 109.65 | 106.77 | 104.97 | a | 96.97 | 73.63 | 69.71 | 89.65 | ||||||||||||
2004 | 70.65 | 70.83 | 88.65 | 87.60 | 97.55 | 105.13 | 108.29 | 107.81 | 102.31 | a | 88.10 | b | 71.00 | 66.55 | 88.70 | |||||||||||
2005 | 68.26 | 69.04 | 78.84 | 87.70 | 97.42 | 103.60 | 111.03 | 107.48 | 103.13 | 91.10 | 81.28 | a | 71.00 | 89.16 | ||||||||||||
2006 | 72.32 | 77.75 | 76.17 | a | 86.62 | a | 100.13 | a | 109.00 | 109.65 | 108.06 | 100.53 | 89.39 | 82.00 | 69.58 | 90.10 | ||||||||||
2007 | 67.29 | 75.89 | 85.00 | 88.77 | 97.81 | 106.47 | 108.39 | 108.87 | 102.43 | 91.48 | 82.60 | 65.14 | b | 90.01 | ||||||||||||
2008 | 66.84 | 73.55 | 82.97 | 89.33 | 92.97 | 108.67 | 108.45 | 106.35 | 104.60 | 93.68 | 81.53 | 65.97 | 89.58 | |||||||||||||
2009 | 73.29 | 74.29 | 81.77 | 86.20 | 101.58 | 100.27 | 111.00 | 109.42 | 105.23 | 89.19 | 81.60 | 67.58 | 90.12 | |||||||||||||
2010 | 70.43 | a | 72.29 | 77.77 | 84.60 | 92.13 | 104.77 | 109.68 | 108.32 | 105.80 | 90.97 | 78.13 | 72.61 | 88.96 | ||||||||||||
2011 | 71.06 | 69.54 | 82.00 | 88.83 | 91.65 | 104.83 | 107.71 | 111.16 | 104.93 | 94.00 | 75.17 | 65.45 | 88.86 | |||||||||||||
2012 | 72.94 | 75.21 | 80.87 | 90.57 | 99.84 | 105.89 | c | 107.52 | 108.39 | 102.47 | 93.77 | 82.17 | 70.29 | 90.83 | ||||||||||||
2013 | 65.97 | a | 71.75 | 86.23 | 90.86 | a | 98.19 | 109.17 | a | 109.00 | a | 107.65 | 102.00 | 88.74 | 77.20 | 67.55 | b | 89.53 | ||||||||
2014 | 74.26 | 78.82 | 84.87 | 91.52 | a | 98.26 | 107.80 | 110.42 | 104.86 | b | 104.23 | 94.21 | b | 79.67 | 69.55 | 91.54 | ||||||||||
2015 | 69.61 | 79.81 | b | 87.10 | b | 88.93 | 91.68 | 107.48 | a | 106.77 | a | 110.87 | 104.28 | a | 92.76 | b | 76.48 | a | 67.97 | 90.31 | ||||||
2016 | 68.26 | 82.14 | 85.83 | b | 89.37 | 93.63 | d | 109.36 | b | 111.97 | a | 109.00 | 100.93 | 95.77 | 81.23 | 70.10 | a | 91.47 | ||||||||
2017 | 67.16 | 76.07 | 87.40 | a | 91.31 | d | 96.77 | 109.53 | 110.48 | 109.97 | 100.50 | 95.84 | 84.33 | 74.03 | 91.95 | |||||||||||
2018 | 76.23 | 74.61 | 81.58 | 93.10 | 97.55 | 106.97 | 110.81 | 110.00 | 107.10 | 86.06 | 78.43 | 68.84 | 90.94 | |||||||||||||
2019 | 68.39 | 67.29 | 80.39 | 91.70 | 90.45 | 105.87 | 110.74 | 112.06 | 101.50 | 91.16 | 79.83 | 66.16 | 88.80 | |||||||||||||
2020 | 71.35 | 73.31 | 76.39 | 90.17 | 102.06 | 107.10 | 113.35 | 114.00 | 107.53 | 96.00 | 80.37 | 70.00 | 91.80 | |||||||||||||
2021 | 69.84 | 75.86 | 79.26 | 93.97 | 98.06 | m | 110.37 | 109.71 | 107.77 | 104.77 | 90.00 | 85.41 | a | 71.68 | 90.78 | a | ||||||||||
2022 | 72.42 | 75.29 | 83.74 | 92.17 | 98.90 | 109.00 | 110.16 | 107.97 | 104.63 | 92.23 | 75.57 | 68.45 | 90.88 | |||||||||||||
2023 | 67.74 | 70.04 | 76.65 | ----- | z | 97.06 | 101.53 | 115.29 | 109.32 | 103.07 | 94.48 | 81.63 | 72.65 | 89.95 | a | |||||||||||
2024 | 67.68 | 73.24 | 78.08 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.00 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 69.34 | 73.89 | 80.29 | 87.65 | 95.41 | 104.53 | 107.69 | 106.73 | 101.84 | 90.71 | 78.24 | 68.52 | 88.72 | |||||||||||||
S.D. | 3.01 | 3.26 | 3.97 | 3.35 | 3.45 | 3.41 | 3.29 | 3.01 | 3.16 | 3.28 | 3.35 | 2.87 | 1.82 | |||||||||||||
SKEW | 0.31 | 0.20 | 0.31 | -0.29 | 0.08 | -0.27 | -0.09 | -0.25 | -0.80 | -0.25 | -0.13 | -0.06 | -0.25 | |||||||||||||
MAX | 77.13 | 82.14 | 89.77 | 93.97 | 102.19 | 110.45 | 115.29 | 114.00 | 107.53 | 96.97 | 85.41 | 75.00 | 91.95 | |||||||||||||
MIN | 60.74 | 67.29 | 71.74 | 79.93 | 89.13 | 96.70 | 100.77 | 99.52 | 92.59 | 83.39 | 71.00 | 62.67 | 85.03 | |||||||||||||
YRS | 55 | 56 | 56 | 53 | 53 | 55 | 55 | 55 | 55 | 55 | 54 | 55 | 49 |