Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
2011,,,10608,11219,11323,11435,11325,11605,10811,10923,10069,9902,,
2012,9625,10292,10598,11497,11736,12188,12180,12626,12285,12317,11288,10838,11456,
2013,9753,11073,12009,12616,13325,13488,13342,13680,13318,13555,12244,,,
2014,,,,,,,,,,,,,,
2015,,,,15646,15532,16362,15891,16548,16141,16082,14458,13736,,
2016,13481,14658,15543,16631,16742,17006,16539,17112,16558,16807,15659,13744,15873,
2017,12780,15122,16329,17082,17216,18635,17815,19391,17862,18371,16738,15805,16929,
2018,15439,16672,17558,18443,18737,18963,18417,19057,18210,18463,16833,16157,17746,
2019,16237,16293,18115,19002,19308,19963,19390,20353,19907,19783,18200,16874,18619,
2020,16421,17372,15335,12836,15900,18012,17807,18324,18508,19016,16789,16800,16927,
2021,17037,17580,19404,20498,21123,22137,22280,22951,21556,21010,19386,19956,20410,
2022,18561,20478,21528,21723,22537,22595,22641,22058, , , , ,21515,
2023, , , , , , , , , , , , , ,
2024, , , , , , , , , , , , , ,