YEAR,Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec,Annual 24-hr Avg.
1998,4780,5095,,,6756,6417,7394,7189,9725,8034,6552,5128
1999,5316,5439,5935,6645,7246,,9347,9087,8192,7391,6523,6137
2000,5675,5828,6032,6586,7264,7762,8794,8504,7378,6803,6173,5577,6865
2001,5423,5638,5749,6249,7089,7522,8709,8885,7431,6843,6259,5642,6787
2002,5520,5923,6073,6520,7144,7996,8872,9153,8101,7419,6490,6070,7107
2003,5249,6059,5924,6616,7196,7951,8844,9177,8258,7235,6070,5941,7043
2004,5129,6205,6459,7335,7709,,9426,9176,8291,7553,7037,6435
2005,
2006,
2007,
2008,