YEAR,Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec,Annual 24-hr Avg.
1990,26181,27752,27348,34257,34546,36025,34288,34738,33364,31946,29233,29967,31652
1991,31139,33953,33147,35501,35501,41827,41125,41536,32408,33330,34465,31100,35425
1992,33226,36229,36034,37990,36877,38985,37316,38650,40672,40827,37342,37889,37769
1993,35617,39770,41329,43824,42124,43224,40766,41723,43182,42037,39886,39736,41097
1994,38886,41477,43797,44046,43447,45638,41539,43807,44564,42754,40941,40434,42607
1995,40524,42845,43397,45321,44273,45444,43186,44299,44561,44145,41143,40568,43309
1996,40739,41659,,45617,47904,47711,42650,44504,44729,43261,41145,39800
1997,40623,43746,43994,46542,45779,46791,44600,47453,46587,45926,43762,42472,44856
1998,41667,45462,45806,47568,46193,46874,44169,44730,,45911,40989,42089
1999,42264,44064,45208,47339,46747,47501,43696,44809,45125,45264,42840,41425,44690
2000,41527,44126,45064,46479,45212,46153,43262,44026,42993,41657,38182,37167,42987
2001,36813,40005,41007,42146,32146,30325,28293,28826,27203,27006,24770,23078,31802
2002,23817,25600,25820,30592,29873,28861,27320,28660,29098,29489,26879,25876,27657
2003,26387,27873,27429,29727,29052,29022,26640,27354,29095,28856,26992,25906,27861
2004,26204,27514,27541,27441,26018,26016,25278,26612,27857,25785,24690,23965,26243
2005,23949,25717,26077,27432,26627,25761,24465,27200,28137,,24544,24558
2006,24926,26229,27046,27678,27328,27176,24990,27512,27671,27025,25757,24315,26471
2007,25408,26446,26883,27486,26777,26345,24937,26769,26384,26519,25063,23033,26004
2008,23123,25832,24915,26807,26369,24744,23779