YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1981 | ----- | z | 67.04 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.04 | k |
1982 | 68.87 | 67.26 | e | 68.58 | 69.23 | 71.96 | c | 74.07 | 74.61 | 76.60 | a | 74.38 | a | 72.35 | 71.50 | 67.71 | 71.43 | |||||||||
1983 | 66.65 | 66.43 | 68.26 | 69.10 | 69.84 | 70.83 | 72.00 | 73.35 | 73.53 | 72.03 | 69.87 | 67.81 | 69.97 | |||||||||||||
1984 | 67.43 | a | 67.14 | 69.43 | a | 69.73 | 70.94 | 71.13 | 72.42 | 72.30 | a | 72.67 | 72.96 | c | 70.40 | 66.68 | 70.27 | |||||||||
1985 | 64.94 | 66.50 | 66.61 | 68.28 | e | 71.90 | 71.57 | 72.94 | 72.94 | 73.27 | 72.65 | 69.93 | ----- | z | 70.14 | a | ||||||||||
1986 | 67.00 | 68.18 | 71.42 | 70.70 | 73.00 | 73.33 | 74.81 | 76.19 | 75.93 | 74.16 | 72.53 | 67.77 | 72.09 | |||||||||||||
1987 | 66.35 | 65.93 | 67.32 | 68.73 | 70.17 | a | 72.37 | 74.29 | 74.19 | 76.07 | 74.06 | 71.37 | 69.13 | 70.83 | ||||||||||||
1988 | 67.10 | 67.83 | 68.61 | 69.50 | 72.03 | 72.07 | 72.87 | 73.41 | d | 73.47 | 73.00 | 71.80 | 68.71 | 70.87 | ||||||||||||
1989 | 67.61 | 67.04 | 69.03 | 70.13 | 71.55 | 73.03 | 73.55 | 72.65 | 72.10 | 73.81 | 70.37 | 66.39 | 70.60 | |||||||||||||
1990 | 66.84 | 66.21 | 66.29 | 69.97 | 70.39 | 71.87 | 73.55 | 73.84 | 73.57 | 72.26 | 71.07 | 67.10 | a | 70.25 | ||||||||||||
1991 | 65.03 | 67.32 | 68.03 | 68.04 | g | 69.16 | 70.30 | 71.77 | 73.16 | 72.67 | 71.06 | 70.13 | 67.90 | b | 69.69 | a | ||||||||||
1992 | 64.52 | 65.66 | 66.84 | 68.93 | 71.16 | 72.37 | 73.19 | 73.55 | 73.89 | b | 73.30 | a | 70.52 | c | 68.74 | 70.22 | ||||||||||
1993 | 64.43 | a | 63.75 | 66.27 | a | 68.97 | 69.77 | 72.00 | 72.82 | c | 73.58 | 73.93 | 72.65 | 68.53 | 66.74 | 69.45 | ||||||||||
1994 | 65.29 | 67.07 | 67.94 | 69.33 | 71.00 | 71.93 | 74.10 | 74.26 | 74.30 | 72.19 | 70.40 | 66.17 | a | 70.33 | ||||||||||||
1995 | 65.60 | a | 65.81 | a | 68.81 | 69.64 | b | 70.71 | 71.52 | a | 73.30 | a | 72.87 | a | 72.87 | 71.48 | 71.17 | 68.20 | a | 70.16 | ||||||
1996 | 68.81 | 67.21 | 66.68 | 70.47 | 72.61 | 73.37 | 74.03 | 73.29 | 73.00 | 72.55 | 71.80 | 67.68 | 70.96 | |||||||||||||
1997 | 66.13 | a | 67.11 | 67.74 | 69.43 | 70.97 | 72.97 | 73.65 | 73.61 | 74.10 | 72.39 | 70.03 | 66.87 | 70.42 | ||||||||||||
1998 | 65.55 | 65.50 | 67.16 | 68.53 | 68.68 | 70.80 | 72.06 | 73.10 | 71.77 | 71.16 | 70.27 | 67.39 | 69.33 | |||||||||||||
1999 | 66.13 | 65.54 | 67.39 | 67.20 | 70.26 | 70.73 | 71.29 | 71.26 | 71.07 | 69.97 | 69.10 | 67.17 | a | 68.92 | ||||||||||||
2000 | 65.26 | 65.55 | 67.29 | 67.97 | 71.61 | 71.33 | 73.10 | 73.55 | 72.59 | a | 72.19 | 68.93 | a | 66.35 | 69.64 | |||||||||||
2001 | 66.90 | 67.00 | a | 67.07 | a | 68.67 | 69.97 | 71.62 | a | 72.57 | a | 74.16 | 72.90 | 71.65 | 69.93 | 68.23 | 70.05 | |||||||||
2002 | 66.71 | 65.29 | 67.23 | 70.47 | 71.55 | 71.60 | 73.42 | 73.47 | a | 72.00 | a | 71.71 | 69.76 | a | 67.61 | 70.07 | ||||||||||
2003 | 66.97 | 66.11 | 68.23 | 69.27 | 70.74 | 71.70 | 72.18 | i | 73.85 | k | 65.50 | v | 72.18 | n | 70.00 | l | 68.73 | i | 68.83 | f | ||||||
2004 | 67.25 | k | 69.58 | j | 68.91 | i | 69.65 | j | 71.95 | k | 72.79 | p | 73.00 | k | 73.74 | l | 73.20 | j | 72.10 | k | 71.39 | l | 68.19 | o | ----- | z |
2005 | 67.05 | k | 65.89 | j | 67.90 | k | 70.76 | i | 71.19 | j | 72.43 | i | 72.75 | k | 73.36 | i | 73.57 | i | 71.43 | j | 70.20 | j | 67.71 | j | ----- | z |
2006 | 66.75 | k | 65.84 | i | 68.32 | i | 68.16 | k | 68.55 | i | 71.71 | i | 71.95 | k | 73.91 | i | 72.95 | j | 72.32 | i | 70.58 | k | 66.10 | k | ----- | z |
2007 | 65.24 | j | 63.89 | i | 65.86 | j | 66.35 | j | 67.73 | i | 69.45 | j | 69.95 | j | 69.91 | i | 69.79 | k | 69.26 | h | 66.80 | j | 65.40 | k | ----- | z |
2008 | 61.90 | j | 62.90 | i | 65.21 | l | 66.59 | h | 66.55 | k | 67.90 | j | 68.95 | i | 68.45 | k | 67.86 | i | 68.14 | i | 65.67 | o | 64.57 | j | ----- | z |
2009 | 61.75 | k | 62.58 | i | 62.32 | l | 64.52 | i | 67.45 | k | 69.48 | i | 69.64 | i | 70.22 | m | 69.00 | i | 69.43 | j | 66.44 | l | 63.14 | i | ----- | z |
2010 | 63.79 | l | 63.06 | j | 63.41 | i | 64.95 | i | 67.35 | k | 67.15 | j | 68.52 | j | 72.10 | j | 72.32 | k | 72.80 | k | 71.06 | l | 69.05 | j | ----- | z |
2011 | 66.65 | k | 68.58 | i | 69.95 | i | 70.68 | k | 72.05 | j | 72.95 | i | 71.80 | k | 73.15 | k | 72.79 | k | 71.81 | j | 70.50 | n | 67.78 | m | ----- | z |
2012 | 66.61 | m | 66.75 | q | 68.37 | l | 69.47 | k | 69.90 | j | 71.89 | l | 72.00 | j | 72.80 | k | 72.17 | l | 73.15 | k | 69.72 | l | 68.17 | m | ----- | z |
2013 | 66.68 | l | 66.40 | w | 68.09 | t | 69.55 | h | 72.32 | i | 73.22 | l | 74.18 | i | 74.65 | k | 74.20 | j | 73.33 | j | 71.06 | m | 69.44 | m | ----- | z |
2014 | 66.90 | j | 68.71 | k | 68.95 | k | 71.07 | o | 72.43 | j | 72.29 | m | 74.25 | k | 74.67 | p | 74.73 | o | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 66.37 | 66.45 | 67.83 | 69.25 | 70.91 | 71.93 | 73.16 | 73.59 | 73.34 | 72.36 | 70.45 | 67.52 | 70.31 | |||||||||||||
S.D. | 1.23 | 1.00 | 1.20 | 0.86 | 1.08 | 0.96 | 0.93 | 1.15 | 1.23 | 1.02 | 1.01 | 0.84 | 0.74 | |||||||||||||
SKEW | 0.31 | -0.66 | 1.16 | -0.36 | -0.08 | 0.45 | -0.12 | 0.98 | 0.54 | -0.19 | 0.13 | 0.15 | 0.43 | |||||||||||||
MAX | 68.87 | 68.18 | 71.42 | 70.70 | 73.00 | 74.07 | 74.81 | 76.60 | 76.07 | 74.16 | 72.53 | 69.13 | 72.09 | |||||||||||||
MIN | 64.43 | 63.75 | 66.27 | 67.20 | 68.68 | 70.30 | 71.29 | 71.26 | 71.07 | 69.97 | 68.53 | 66.17 | 68.92 | |||||||||||||
YRS | 22 | 23 | 22 | 21 | 22 | 22 | 21 | 21 | 21 | 21 | 21 | 20 | 19 |