Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
1995,,10418,10486,11369,12651,13606,15188,16295,13810,12188,11249,10101,,
1996,8446,10144,10764,11947,13009,14548,16536,17130,14035,12433,10233,9520,12395,
1997,9485,10426,10582,11780,13402,14932,16574,16923,14121,12691,11683,10901,12792,
1998,9879,11025,11740,12712,13730,15146,16843,17421,14888,13334,12190,11509,13368,
1999,10857,11484,12249,13347,14303,15707,17993,18136,15595,14003,12391,11954,14002,
2000,10943,11996,12644,13304,14397,15689,17648,18395,14932,13689,12114,11832,13965,
2001,11094,11637,12425,13108,14521,15775,17720,18658,15508,13999,12733,11980,14097,
2002,11326,12225,12103,13451,14659,16211,18194,19071,15378,14323,13187,12488,14385,
2003,11837,12635,12424,13595,14948,16347,18707,20143,15470,14274,12506,12496,14615,
2004,11559,12761,13447,14626,15066,16949,20149,19735,16584,14951,13711,13471,15251,
2005,11863,13475,13675,14540,15820,17384,20212,20451,16219,14392,13609,12337,15331,
2006,12667,13815,14324,15060,16115,17726,20205,20734,17144,15417,14066,14048,15943,
2007,12941,13609,14621,15406,16614,18203,20762,21438,16991,15488,14263,13083,16118,
2008,11602,12841,13382,14125,15747,17155,19740,20167,15823,,,,,
2009,,,,,,,,,,13425,12497,,,
2010,,12664,13187,13365,14718,15427,19471,,15541,14254,12082,11912,,
2011,11816,12170,12571,13496,14507,16502,19952,20693,,14483,12699,12357,14672,
2012,11152,11394,12733,,16028,15242,18847,19904,14858,13866,11584,,14268,
2013,10350,11030,,11747,13898,14172,17951,19028,14067,13744,12020,11582,,
2014,11105,11409,12517,13227,14871,15886,18938,21152,15390,15135,13144,12844,14635,
2015,11913,12690,13126,14826,16280,18212,20414,20714,17638,16505,14289,13562,15847,
2016,13221,14407,14690,15759,16823,20098,23060,23916,19321,17340,,14277,,
2017,13806,14170,15199,16305,18384,20510,24344,24473,19777,19054,16109,15220,18113,
2018,14830,15157,16316,17176,19625,21829,25011,24783,20055,19447,16772,16096,18925,
2019,15600,15008,16201,17797,19857,22324,25513,25897,20359,19220,16610,16045,19203,
2020,14963,16323,14266,12910,16585,20298,21118,22489,20715,18449,16222,16299,17553,
2021,16894,17149,18880,20191,21493,24112,25782,25744,22134,20791,18265,17040,20706,
2022,16193,17866,18452,19145,20205,21739,24718,24921,21262,20148,16899,16130,19806,
2023,17223,17398,18326,19668,21593,23682,24557,25235,22352,21548,18931,17626,20678,
2024,16582,18533,19563, , , , , , , , , , ,