YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.52 | b | 76.79 | 76.56 | 77.63 | 77.21 | 76.02 | 74.19 | 76.42 | e | ||||||
1983 | 73.58 | 73.57 | a | 74.15 | 74.22 | 74.61 | 75.78 | a | 75.34 | 75.45 | a | 77.62 | a | 77.66 | 77.90 | 76.50 | d | 75.53 | ||||||||
1984 | 74.77 | 73.41 | 75.28 | f | 74.32 | 74.95 | 75.78 | e | 75.22 | a | 75.37 | 75.37 | 77.07 | c | 75.02 | b | 72.86 | b | 74.92 | a | ||||||
1985 | 72.36 | b | 73.30 | c | 72.60 | b | 72.36 | b | 73.45 | 75.66 | b | 73.92 | 75.02 | 79.21 | a | 75.71 | 72.93 | a | 71.39 | 73.99 | ||||||
1986 | 73.27 | 73.57 | 75.23 | 74.43 | 75.52 | a | 73.45 | 78.10 | b | 78.84 | 76.02 | 76.89 | 76.03 | 74.03 | 75.45 | |||||||||||
1987 | 73.05 | a | 71.96 | 72.85 | 73.55 | 73.32 | 75.92 | 77.37 | 77.58 | 78.23 | 77.10 | 76.82 | 74.29 | b | 75.17 | |||||||||||
1988 | 73.00 | 72.81 | 73.10 | a | 72.83 | 74.13 | 75.03 | 76.95 | 76.31 | 76.93 | 77.15 | 75.88 | 73.98 | c | 74.84 | |||||||||||
1989 | 72.35 | 71.86 | 73.63 | 73.57 | 75.32 | 75.65 | 76.92 | 76.18 | 75.73 | 75.37 | 74.13 | 73.35 | 74.51 | |||||||||||||
1990 | 72.82 | 71.45 | 71.29 | 72.32 | 73.64 | t | 75.39 | c | 76.39 | 77.76 | 77.95 | b | 76.92 | ----- | z | 72.64 | c | 74.49 | b | |||||||
1991 | 71.28 | d | 75.24 | g | 70.32 | ----- | z | 73.72 | b | 74.27 | 75.00 | b | 76.92 | 76.07 | 75.32 | 75.30 | 72.48 | a | 74.07 | b | ||||||
1992 | 71.07 | b | 71.38 | a | 71.71 | 73.29 | a | 75.53 | 76.74 | a | 77.24 | b | 77.42 | a | 77.84 | b | 77.09 | b | 75.23 | b | 73.62 | b | 74.85 | |||
1993 | 71.87 | d | 70.77 | 71.92 | a | 73.72 | a | 73.29 | c | 75.03 | a | 76.16 | 76.63 | 77.32 | b | 75.80 | c | 74.07 | a | 72.95 | b | 74.13 | ||||
1994 | 70.77 | a | 72.16 | f | 71.85 | d | 73.00 | 73.88 | a | 75.02 | b | 77.00 | a | 76.77 | e | 76.43 | i | 75.72 | k | 74.53 | a | 72.48 | b | 73.92 | c | |
1995 | 71.40 | 71.70 | 73.69 | b | 73.87 | c | 74.81 | 75.88 | b | 77.50 | b | 76.81 | 77.12 | a | 77.61 | 75.36 | a | 74.45 | 75.02 | |||||||
1996 | 73.08 | f | 72.71 | v | 71.50 | e | 74.75 | 76.73 | 77.42 | 77.23 | 77.38 | a | 77.15 | 76.78 | a | 74.64 | b | 73.35 | 75.69 | b | ||||||
1997 | 73.35 | a | 73.10 | c | 72.62 | a | 73.12 | 74.68 | 76.45 | 76.90 | a | 76.59 | b | 76.82 | 76.97 | 75.17 | a | 72.67 | a | 74.87 | ||||||
1998 | 72.33 | a | 72.05 | 73.37 | 73.80 | b | 73.45 | 74.68 | 75.52 | 77.63 | 76.41 | a | 75.68 | 74.25 | 73.10 | 74.36 | ||||||||||
1999 | 71.69 | 71.55 | 71.37 | 72.32 | 73.35 | 73.58 | 74.62 | a | 76.97 | a | 75.90 | a | 75.11 | l | 73.48 | i | 71.67 | j | 73.48 | c | ||||||
2000 | 70.48 | i | 72.15 | i | 72.64 | i | 72.69 | i | 73.63 | h | 74.73 | d | 76.40 | j | 76.91 | h | 76.24 | i | 75.95 | i | 74.47 | m | 72.95 | k | 74.73 | k |
2001 | 73.23 | i | 71.06 | l | 71.81 | j | 72.71 | i | 72.70 | p | 74.00 | k | 76.00 | x | ----- | z | 76.72 | c | 76.22 | a | 75.73 | 75.00 | c | 75.92 | h | |
2002 | 72.83 | g | 71.31 | b | 72.03 | b | 74.54 | b | 74.69 | 75.67 | a | 76.44 | e | 77.74 | d | 76.62 | b | 77.40 | b | 76.07 | b | 74.23 | c | 75.16 | a | |
2003 | 73.58 | a | 72.61 | e | 73.68 | c | 73.52 | e | 75.12 | a | 76.10 | 77.28 | a | 78.43 | a | 77.80 | g | 77.83 | e | 75.42 | k | 76.00 | l | 75.35 | c | |
2004 | 73.10 | j | 73.75 | i | 73.54 | g | 73.71 | a | 75.79 | e | 75.28 | n | 76.59 | n | 77.52 | i | 77.85 | j | 76.91 | b | 75.02 | i | 73.44 | e | 74.96 | h |
2005 | 73.14 | c | 73.81 | d | 73.68 | c | 74.25 | d | 75.96 | d | 76.73 | b | 77.46 | f | 77.48 | c | 78.61 | c | ----- | z | 74.20 | b | 73.15 | 75.10 | b | |
2006 | 72.39 | 71.14 | 71.00 | 72.52 | 73.35 | 75.06 | c | 76.63 | a | 77.52 | a | 76.38 | a | 76.07 | a | 75.64 | a | 72.67 | b | 74.20 | ||||||
2007 | 71.23 | 71.43 | 72.02 | 73.32 | 74.50 | a | 75.38 | a | 76.26 | 76.23 | a | 76.82 | 75.89 | 73.86 | b | 72.83 | b | 74.15 | ||||||||
2008 | 70.60 | a | 70.23 | a | 71.71 | 71.73 | 73.21 | 74.13 | 76.14 | b | 75.61 | c | 75.47 | 75.59 | b | 74.02 | a | 71.67 | a | 73.34 | ||||||
2009 | 70.83 | e | 69.94 | d | 70.05 | b | 71.16 | b | 74.79 | c | 76.16 | e | 76.41 | h | 77.92 | l | 76.98 | f | 78.18 | i | 75.96 | d | 74.39 | q | 72.70 | e |
2010 | 75.17 | k | 73.69 | l | 73.79 | s | 72.90 | t | 75.88 | j | 75.50 | q | 74.88 | r | 75.50 | e | 75.92 | q | 77.28 | k | 74.58 | k | 74.02 | h | 75.50 | k |
2011 | 72.47 | p | 74.32 | q | 74.38 | k | 73.90 | y | 74.76 | l | 76.48 | i | 76.41 | c | 77.14 | q | 75.80 | h | 75.63 | p | 74.88 | q | 72.89 | l | 76.41 | k |
2012 | 71.79 | q | 72.00 | o | 71.71 | e | 72.19 | d | 74.02 | a | 74.59 | b | 75.34 | b | 76.22 | d | 76.20 | b | 76.02 | b | 74.71 | b | 73.83 | d | 74.48 | b |
2013 | 72.69 | d | 71.70 | a | 73.12 | b | 74.08 | 75.43 | a | 75.16 | h | 76.83 | j | 77.78 | a | 78.33 | d | 77.75 | k | 77.00 | d | 75.78 | k | 75.02 | d | |
2014 | 74.82 | a | 75.07 | e | ----- | z | 76.10 | e | 76.00 | i | 77.05 | k | 77.50 | f | 78.07 | q | 78.52 | g | 78.15 | r | 77.40 | e | 76.54 | e | 75.98 | g |
2015 | 72.10 | u | 75.40 | w | 75.69 | r | 74.53 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2020 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2023 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2024 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 72.43 | 72.16 | 72.41 | 73.43 | 74.52 | 75.44 | 76.35 | 76.84 | 76.98 | 76.59 | 75.30 | 73.53 | 74.60 | |||||||||||||
S.D. | 1.18 | 1.25 | 1.24 | 1.05 | 0.98 | 0.96 | 1.01 | 0.96 | 1.01 | 0.78 | 1.18 | 1.22 | 0.61 | |||||||||||||
SKEW | 0.26 | 0.35 | 0.17 | 0.08 | 0.30 | -0.19 | -0.61 | -0.04 | 0.35 | -0.19 | 0.28 | 0.84 | -0.26 | |||||||||||||
MAX | 74.82 | 75.07 | 75.23 | 76.10 | 76.73 | 77.42 | 78.10 | 78.84 | 79.21 | 77.83 | 77.90 | 76.54 | 75.53 | |||||||||||||
MIN | 70.60 | 69.94 | 70.05 | 71.16 | 73.21 | 73.45 | 73.92 | 75.02 | 75.37 | 75.32 | 72.93 | 71.39 | 73.34 | |||||||||||||
YRS | 24 | 23 | 25 | 27 | 26 | 27 | 25 | 27 | 25 | 24 | 26 | 26 | 14 |