Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
2009,,,,,28561,30607,33448,32213,28394,25592,23228,22094,,
2010,21121,22781,24501,25499,26933,30110,33340,32347,29063,26253,22064,21294,26276,
2011,20224,21147,22884,24532,26472,29483,32590,32464,29371,25743,22929,22538,25865,
2012,20800,21957,22926,25289,27291,28951,32490,32645,28511,25945,22900,21784,25957,
2013,20287,22243,24197,25552,28652,31316,34627,34299,29597,30739,29449,22831,27816,
2014,21874,21716,24263,26863,29497,31996,35345,34811,30867,28311,24947,23920,27868,
2015,22898,25075,26811,28490,31210,34401,36622,35123,31994,29669,26213,24337,29404,
2016,23998,26136,27650,30210,32355,35469,38125,37521,33884,30150,27752,24080,30611,
2017,23441,24302,27730,29842,33161,34898,36531,34014,26048,29665,27406,25470,29376,
2018,25206,25234,28076,30443,33337,35974,38703,37489,31700,29406,27345,25930,30737,
2019,24959,22087,26889,30111,33439,36837,40184,38483,34646,31274,28601,27025,31211,
2020,24945,27414,24761,22473,29140,34997,37209,36998,34279,30617,27092,26317,29687,
2021,27206,26515,30822,33246,36222,40167,42219,39096,36497,33603,30252,27562,33617,
2022,25465,28324,30370,31476,34380,37570,40277,39194,35898,33151,26801,24434,32279,
2023,26463,27085,28925,31772,35484,39107,41544,39540,36270,33320,29230,27495,33019,
2024,24587,27638,29928, , , , , , , , , , ,