Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
1995,21416,23947,24795,25346,24533,25252,25773,26175,25956,26205,24616,22534,24712,
1996,20196,23554,24272,26523,,26134,25746,,,26177,25053,21305,,
1997,22218,25200,25838,25779,25790,26940,26843,28561,28583,28262,26423,23995,26203,
1998,23405,26252,26936,27978,28497,,,,,,,,,
1999,,,,,,,,,,,,,,
2000,,,30379,29914,29455,30913,30756,30495,30844,30769,27434,26128,,
2001,25182,28534,30284,30844,30959,31305,31155,32577,31598,31582,29770,24822,29884,
2002,25801,28738,30321,30219,30843,28392,30516,33683,31713,32257,29110,28447,30003,
2003,28291,29979,30515,32761,32507,32128,33083,33274,,33908,30361,27915,,
2004,26814,29289,31613,34244,31849,33200,33381,,31557,33254,31030,28866,,
2005,24481,33715,32533,33602,31767,32965,33130,34064,32700,31697,29937,27435,31502,
2006,27685,30205,31472,32484,32414,,,,,,27702,27058,,
2007,27934,30259,31072,31563,30769,30822,31257,31350,30959,31486,30189,25766,30286,
2008,25984,27864,29830,31727,30554,30441,31402,31419,31831,32066,29860,26623,29967,
2009,27403,30343,30340,34554,,,,33542,33599,32702,30334,27607,,
2010,27555,30365,31421,33815,31203,32358,33383,33443,33507,32135,28556,27311,31254,
2011,28022,29302,30262,33137,31445,32276,32776,33660,33617,32956,30298,28528,31357,
2012,28830,30651,30934,33687,31885,32666,33131,33578,33445,33111,30878,28294,31757,
2013,26677,29994,31519,32758,32183,32407,33057,33210,32942,32863,30240,27959,31317,
2014,28062,29769,31744,34044,32912,33668,34350,34747,35095,35005,31414,29952,32564,
2015,30193,33625,34537,36460,35570,36921,36571,37344,37893,36837,33437,30674,35005,
2016,31268,35171,36358,38653,37867,34698,37386,39412,39834,38564,35933,30806,36329,
2017,29654,34116,37052,39335,39397,39888,40395,42058,39109,38400,36307,34784,37541,
2018,32619,35202,36314,39260,38871,40110,40656,41265,40454,39910,36724,33026,37868,
2019,32962,33746,37231,39861,39132,40858,40944,41240,40476,37352,35912,33754,37789,
2020,32311,33509,30205,22990,30435,35732,38334,38786,38421,36221,31536,30031,33209,
2021,31370,31998,35956,38352,39236,42395,42711,41451,41810,39968,37736,33126,38009,
2022,32099,35683,36714,39105,39493,40421,40546,39865,38797,38682,34690,31800,37324,
2023,32652,33715,35083,37979,39095,40822,41860,41010,40932,40217,36989,33215,37797,
2024,31185,35331,35183, , , , , , , , , , ,