Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual 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,
2008,23123,25832,24915,26807,26369,24744,23779,24895,25542,25697,23672,23027,24867,
2009,22695,24712,24060,25828,24768,24682,24189,24623,25341,25022,23222,22745,24324,
2010,21722,23868,24701,24984,24559,25118,24393,25361,27109,25859,23982,22948,24550,
2011,23089,24890,24897,25888,26001,25707,23688,25053,26125,26384,24035,22938,24891,
2012,22764,24519,24626,25695,24971,24703,23388,24946,25708,26042,24675,23325,24614,
2013,22513,25150,25260,26418,25929,25472,24253,25395,26433,26392,24707,23255,25098,
2014,23159,26462,25813,27187,26544,27920,26245,27842,28749,28916,26038,25564,26703,
2015,25662,28047,28097,29135,28355,28014,27717,28182,29377,,,,,
2016,,,,,,,,,0,25002,23622,21767,,
2017,21518,24578,24591,25287,26578,26474,24464,26737,27138,26481,25151,23581,25215,
2018,24628,25873,26701,27800,26575,26781,26608,28624,29199,29475,27952,25328,27129,
2019,26566,27721,28936,29608,28591,28873,28103,28641,29991,29815,29143,27128,28593,
2020,26737,28852,23262,16170,20513,22847,22538,24745,25126,25339,22734,21358,23352,
2021,22975,24359,26719,26940,27238,27894,28916,28827,29167,29127,26901,28008,27256,
2022,25704,27762,28141,29507,28259,27518,26848,29005,29661,29426,26189,24561,27715,
2023,26591,28014,27569,29658,28677,27789,26286,28951,29687,30031,27800,25548,28050,
2024,25122,28606,28630, , , , , , , , , , ,