Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
2008,,,,,,,,,,,35008,32575,,
2009,31029,33838,35772,37042,37769,39496,39660,39365,38565,37680,36303,34130,36721,
2010,32452,36006,38241,38809,39008,40744,,41458,40057,39177,36942,34455,,
2011,34455,35698,38281,37875,,,,,41710,41288,39728,38818,37579,
2012,35998,38823,40312,42185,43122,44722,44509,45237,43037,42622,41295,40585,41871,
2013,35710,40227,43324,44396,45611,47499,46846,47701,46205,45906,43630,40856,43993,
2014,38740,40843,44871,45946,47037,48540,47393,47841,46285,46088,42321,42868,44898,
2015,40832,45121,47655,48853,49932,52394,51446,51617,50069,49758,47131,44622,48286,
2016,43519,47438,50363,52102,53723,55753,54865,55706,53498,53442,51195,44551,51346,
2017,37123,47155,52946,55534,57012,51990,55407,58705,56143,56639,53848,50854,52780,
2018,48074,50855,54992,56670,56967,58581,58479,59130,57579,57003,54819,52225,55448,
2019,50371,50389,56867,58307,58626,60303,59446,60413,58593,58328,55098,53691,56703,
2020,51555,55207,51381,43339,53132,60044,60185,61748,62721,62301,56363,55329,56109,
2021,54497,54577,62911,64546,65633,68186,67710, , , , , ,62580,
2022, , , , , , , , , , , , , ,
2023, , , ,61303,63184,72077,68792,65278,63184,62958,60204,57679,63851,
2024,50076,58068,60284, , , , , , , , , , ,