Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
2007,,,,,,4284,4167,4081,3888,3836,7159,5812,,
2008,5316,5606,6500,7108,7195,7149,7602,7646,7577,7504,7357,6683,6937,
2009,6577,6717,6779,7986,8345,8798,9095,9174,9035,8632,8283,8068,8124,
2010,7266,8018,8546,8941,8980,9571,9951,9755,9769,9396,7830,8324,8862,
2011,8006,8290,8704,9431,9603,9452,9628,9959,9545,9419,8844,9077,9163,
2012,8336,8618,8857,9473,9674,10140,10471,10487,10572,10034,9401,9433,9625,
2013,8687,8826,9530,10047,10337,11204,10692,10711,10837,10500,10093,9416,10073,
2014,8988,9299,9977,10577,10713,11082,11147,11211,11075,11132,10220,10354,10481,
2015,10094,11092,11360,11855,12124,12635,12587,12631,12353,11739,11032,11084,11715,
2016,10069,10983,11693,12373,12367,12728,12627,12408,12421,12266,11796,11170,11908,
2017,9789,10817,12003,12779,12850,12894,12871,12995,12743,12393,11778,11395,12109,
2018,11165,11682,12413,13373,13570,14029,14227,14408,14096,13725,12777,11775,13103,
2019,11218,11137,12804, , , ,13821,14116,13887,13728,12855,12233,12867,
2020,10149,12249,10907,8933,11567,13430,13064,13386,13274,12838,11468,11741,11917,
2021,11378,11514,13040,13959,15108,15721,15648,15285,15167,14758,13666,12623,13989,
2022,11943,13250,13558,14540,14911,15505,15273,15327,15136,14842,13069,12637,14166,
2023,12474,13220,13613,15337,16165,16895,17600,17660,16638,16255,15213,14643,15476,
2024,13198,14538,14886, , , , , , , , , , ,