Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
2011,,,,,,,,,14585,14432,13592,13749,,
2012,13775,14268,14096,15143,15000,14480,13710,14152,14251,14443,13776,13468,14213,
2013,12725,13805,14166,14572,16471,18827,17951,13950,14090,13854,13105,12563,14673,
2014,12446,13276,13302,14143,14012,13486,12901,13468,13872,13714,12880,12804,13359,
2015,12686,13834,13666,14127,13989,13630,13087,13424,,11862,11111,11110,,
2016,11072,11888,11727,12424,12295,11884,11277,11698,11763,11861,11498,11031,11701,
2017,10409,11333,11535,12038,12070,11496,11138,11538,11550,11587,11182,10895,11398,
2018,10687,11179,11234,12013,11787,11334,11332,12456,11876,11494,11102,10799,11441,
2019,10588,10893,11292,11836,11879,11285,11046,11469,11792,11580,11159,10901,11310,
2020,10682,11202,9972,8620,10300,10885,10753,10860,10959,10760,10000,10066,10422,
2021,10235,10510,11159,11847,11796,11347,10860,10899,11037,11191,10568,10404,10988,
2022,10119,10709,10834,11321,11526,10860,10461,10937,11085,11228,10189,9973,10770,
2023,9976,10600,10760,10953,11857,11310,10951,11235,11080,11211,10459,10218,10884,
2024,10136,11111,11628, , , , , , , , , , ,