YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1993 | 67.13 | a | 70.64 | 84.17 | a | 91.48 | a | 97.94 | 105.00 | a | 107.39 | 106.84 | 103.97 | 92.77 | 76.31 | a | 69.48 | b | 89.43 | |||||||
1994 | 73.03 | a | 72.93 | a | 84.08 | f | 89.53 | 93.68 | 107.20 | 109.55 | 108.39 | 103.07 | 88.90 | 70.20 | 66.52 | 89.36 | a | |||||||||
1995 | 66.63 | a | 78.29 | 80.43 | a | 84.57 | 89.90 | b | 103.07 | b | 109.16 | 110.10 | 105.87 | 95.61 | 84.97 | 73.19 | 90.15 | |||||||||
1996 | 73.87 | a | 77.76 | 83.07 | a | 90.25 | f | 99.27 | e | ----- | z | ----- | z | ----- | z | ----- | z | 92.95 | i | 83.06 | n | 72.82 | n | 83.49 | h | |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.52 | d | 65.52 | k |
1998 | 71.86 | c | 69.64 | c | 77.36 | f | 83.46 | b | 91.18 | i | 100.90 | i | 111.00 | j | 111.04 | h | 103.95 | j | 90.95 | j | 78.66 | a | 67.42 | e | 74.21 | g |
1999 | 73.06 | 74.86 | 79.61 | 81.34 | a | 96.14 | j | 103.79 | k | 108.36 | i | 107.60 | k | 103.50 | h | 97.09 | i | 81.69 | d | 71.15 | d | 76.95 | f | |||
2000 | 73.33 | a | 75.57 | a | 80.70 | a | 92.73 | 101.67 | j | 105.29 | i | 109.22 | h | 108.86 | j | 103.14 | h | 87.45 | i | 71.96 | c | 72.70 | d | 77.83 | f | |
2001 | 67.90 | b | 71.41 | a | 81.28 | b | 86.53 | 103.71 | 106.85 | d | 108.07 | a | 109.16 | 106.07 | a | 94.34 | b | 80.59 | a | 67.20 | a | 90.26 | ||||
2002 | 70.06 | 77.29 | 78.94 | 88.86 | b | 96.30 | a | 108.53 | 109.77 | 109.32 | 104.90 | a | 90.10 | b | 80.79 | a | 69.03 | a | 90.32 | |||||||
2003 | 78.29 | 72.64 | 81.52 | 83.36 | b | 97.00 | 105.30 | 109.60 | a | 107.68 | 105.45 | a | 98.10 | 74.41 | a | 69.71 | c | 90.25 | ||||||||
2004 | 70.80 | a | 71.66 | 89.16 | 89.03 | 99.33 | a | 105.34 | a | 109.73 | a | 108.73 | a | 102.29 | b | ----- | z | 72.60 | 67.86 | b | 89.69 | a | ||||
2005 | 69.68 | 70.93 | 79.94 | 88.45 | a | 97.68 | 104.33 | 111.48 | 107.94 | 103.47 | 91.89 | c | 80.20 | 70.52 | b | 89.71 | ||||||||||
2006 | 71.84 | 77.07 | a | 75.58 | 86.50 | 100.20 | a | 109.90 | 110.41 | d | 109.29 | 102.00 | a | 89.63 | a | 82.33 | 69.63 | a | 90.37 | |||||||
2007 | 67.39 | 76.00 | 85.90 | b | 89.67 | 98.29 | 107.70 | 109.53 | a | 110.96 | c | 102.00 | a | 92.67 | a | 82.27 | 66.36 | c | 90.73 | |||||||
2008 | 67.10 | a | 75.44 | b | 83.83 | b | 90.37 | 94.42 | 109.53 | 110.16 | 108.03 | 105.90 | 95.19 | 82.53 | 68.36 | c | 90.91 | |||||||||
2009 | 73.97 | b | 75.26 | a | 84.10 | 86.84 | e | 102.43 | h | 101.67 | i | 113.53 | l | 110.65 | h | 108.15 | j | 95.06 | m | ----- | z | 66.24 | n | 80.04 | h | |
2010 | 69.89 | m | 73.26 | i | 79.15 | k | 83.70 | j | 94.36 | i | 106.33 | i | 110.91 | i | 111.48 | j | 105.45 | h | 90.33 | g | 78.11 | c | 70.77 | i | 78.11 | k |
2011 | 69.78 | d | 70.32 | c | 81.33 | g | 88.72 | a | 92.92 | f | 105.67 | i | 108.95 | k | 112.00 | h | 106.48 | i | 93.71 | j | 77.76 | i | 65.50 | i | 76.27 | i |
2012 | 73.11 | d | 75.19 | b | 80.16 | 90.22 | c | 101.22 | h | 108.15 | j | 107.43 | c | 108.45 | b | 104.54 | f | 93.80 | k | 83.35 | j | 73.65 | n | 89.09 | f | |
2013 | 67.95 | k | 72.40 | h | 86.38 | j | 89.44 | l | 98.19 | o | 108.44 | n | 108.67 | j | 108.41 | i | 103.55 | j | 90.24 | j | 79.26 | k | 68.27 | p | ----- | z |
2014 | 75.90 | k | 80.78 | j | 85.32 | l | 90.29 | m | 97.11 | l | 107.50 | j | 109.89 | m | 106.33 | p | 105.20 | j | 95.30 | h | 82.73 | o | 71.72 | m | ----- | z |
2015 | 72.62 | j | 83.22 | j | 87.61 | m | 90.47 | k | 93.41 | n | 106.55 | h | 107.50 | i | 110.30 | u | 103.29 | i | 94.95 | i | 80.69 | n | 68.86 | j | ----- | z |
2016 | 69.05 | j | 85.00 | m | 87.31 | o | 91.00 | k | 94.79 | l | 108.27 | h | 112.10 | k | 109.53 | n | 100.65 | m | 95.83 | m | 84.13 | o | 73.33 | s | ----- | z |
2017 | 68.00 | m | 78.19 | l | 86.65 | k | 92.80 | o | 97.20 | k | 108.52 | i | 110.74 | l | 110.64 | i | 102.90 | j | 96.29 | j | 83.26 | k | 73.56 | m | ----- | z |
2018 | 76.81 | j | 76.63 | i | 81.59 | i | 93.68 | k | 96.60 | k | 107.90 | j | 111.21 | l | 109.62 | j | 107.28 | l | 88.81 | o | 80.32 | k | 70.41 | n | ----- | z |
2019 | 69.29 | j | 68.60 | h | 80.70 | k | 91.39 | g | 90.45 | i | 106.16 | k | 109.59 | i | 111.68 | i | 103.05 | k | 91.39 | h | 81.74 | k | 66.77 | i | ----- | z |
2020 | 72.38 | j | 74.26 | j | 76.57 | j | 88.90 | j | 102.11 | l | 106.52 | i | 111.83 | m | 114.70 | k | 107.44 | l | 98.86 | i | 82.85 | j | 70.84 | l | ----- | z |
2021 | 69.40 | k | 76.79 | i | 79.05 | j | 93.14 | h | 98.86 | i | 109.20 | j | 108.75 | g | 108.48 | j | 105.41 | h | 91.09 | i | 86.88 | m | 72.77 | i | ----- | z |
2022 | 71.85 | e | 75.00 | d | 84.81 | d | 91.38 | d | 99.20 | f | 108.68 | h | 110.32 | i | 108.48 | h | 104.27 | h | 93.69 | e | 75.48 | g | 68.36 | f | 83.35 | g |
2023 | 68.72 | f | 69.71 | d | 76.37 | d | 90.04 | d | 95.27 | e | 99.87 | o | 113.50 | o | 111.47 | n | 103.00 | m | 95.78 | h | 81.75 | b | 72.13 | a | 80.88 | f |
2024 | 68.50 | a | 73.59 | b | 78.77 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.62 | i |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 70.96 | 73.87 | 81.57 | 88.06 | 97.15 | 106.61 | 109.36 | 108.74 | 104.09 | 92.99 | 78.71 | 69.17 | 90.24 | |||||||||||||
S.D. | 3.02 | 2.76 | 3.39 | 3.09 | 3.42 | 2.20 | 1.21 | 1.12 | 1.62 | 2.79 | 4.38 | 2.33 | 0.46 | |||||||||||||
SKEW | 0.40 | -0.08 | 0.29 | -0.65 | -0.26 | 0.04 | -0.30 | 0.33 | -0.07 | 0.16 | -0.64 | 0.21 | -0.36 | |||||||||||||
MAX | 78.29 | 78.29 | 89.16 | 92.73 | 103.71 | 109.90 | 111.48 | 110.96 | 106.07 | 98.10 | 84.97 | 73.19 | 90.91 | |||||||||||||
MIN | 66.63 | 69.64 | 75.58 | 81.34 | 89.90 | 103.07 | 107.39 | 106.84 | 102.00 | 88.90 | 70.20 | 65.52 | 89.43 | |||||||||||||
YRS | 20 | 21 | 18 | 19 | 13 | 11 | 12 | 12 | 11 | 11 | 16 | 16 | 9 |