YEAR,Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec,Annual 24-hr Avg.
1990,7473,8018,8650,9193,9027,9223,9244,9391,9710,9262,9301,8596,8927
1991,8242,8819,10041,10643,11597,11750,14352,12269,11809,11208,10250,10290,10955
1992,9977,10029,10398,11102,11712,12066,12085,12684,12611,12133,11216,10489,11410
1993,9377,10505,11366,12607,13177,13604,13303,13285,13104,12859,11809,11653,12229
1994,10952,11500,12626,13234,13917,14028,13916,14166,13879,13674,12002,11821,12985
1995,11778,12554,13449,14584,14900,15370,14780,15309,14345,14393,12946,12256,13889
1996,11830,12876,13589,14524,15022,14773,13609,11831,12566,14352,13425,14581,13582
1997,13829,15939,16970,18227,18687,18806,17957,18752,19127,18399,16970,16234,17491
1998,13233,13316,,,,,,,,,21098,20504
1999,20603,21030,22425,23934,24494,26072,25417,25587,26099,27010,24595,24251,24293
2000,22993,23369,26027,28487,27693,27796,25874,29481,29186,29397,27066,26979,27029
2001,25516,27447,30252,32529,32038,32232,31350,32099,30875,31320,29234,28098,30249
2002,27404,29244,29653,32867,35591,31920,32212,32758,31815,32529,30105,29656,31313
2003,29270,30850,30915,34107,37757,35201,34154,33991,32338,32261,28521,30445,32484
2004,28176,30667,33002,35162,34948,36041,35200,35001,34934,35010,33115,33453,33726
2005,31508,33866,35079,36488,36818,37973,36560,37737,35958,35164,33715,33488,35363
2006,32915,35186,35849,37851,38624,39327,37164,38427,37370,37527,35247,34008,36625
2007,33550,35113,36232,37875,39024,37837,37214,38404,36387,37349,35296,33528,36484
2008,32148,34817,35532,37675,38356,37646,36752,36486,36736,35909,33016,32678,35646
2009,31254,33097,33177,36959,39633,38911,37952,,37299