Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
1995,,24312,24668,25748,26291,28300,29257,28541,27289,25576,23868,22696,,
1996,21087,23020,24637,25901,26106,28518,28590,27535,26167,24984,23470,21186,25100,
1997,21364,22983,24742,27007,27226,27860,28973,28978,27164,25879,24045,22537,25730,
1998,22115,23914,26112,27660,28522,30407,32040,31316,29018,27382,25324,23346,27263,
1999,23293,24491,26793,28143,28543,30537,31905,31337,29092,27758,25850,23564,27609,
2000,23236,25067,26528,26875,27183,29905,30691,30587,30185,31694,28223,26802,28081,
2001,25655,24883,27645,29283,29680,31323,31834,30760,29121,27753,25967,22177,28007,
2002,23472,23783,24940,,,,30901,31553,29266,28093,25767,24341,,
2003,24234,24923,,,,,,,29645,31282,24749,22973,,
2004,,21506,,,28780,,,,32339,29901,,21976,,
2005,24715,,26735,30731,30707,32667,32922,32209,30247,29827,27869,25892,,
2006,25647,,31613,32103,33653,35483,34403,32414,,28705,29579,25952,,
2007,26547,28336,30392,31588,32290,33175,34180,34828,32693,31797,29564,25822,30934,
2008,25996,26669,27748,30974,31291,31845,33590,32085,31718,30277,27363,25795,29613,
2009,25524,27146,27813,31039,31419,33026,35411,33966,33647,30669,27852,26739,30354,
2010,25428,27722,29391,31232,31223,34089,36040,32675,32548,30645,26514,25290,30233,
2011,,26692,27781,29838,30667,32301,33605,32803,32132,29853,27234,26283,29547,
2012,25971,26977,27672,30454,30684,32560,34573,33930,33153,31437,28167,26018,30133,
2013,24415,26662,28500,30545,31053,33505,34865,34435,32993,30545,27825,25900,30104,
2014,25629,27059,28595,30778,31243,32905,34531,33210,32561,31211,27630,26822,30181,
2015,26823,29383,30662,32339,32616,35501,36514,32965,33997,32251,29151,27310,31626,
2016,27085,29426,31048,33646,34064,37032,38094,36689,35565,33359,30775,27203,32832,
2017,26740,29584,32106,34797,36635,38299,39683,39476,36203,34398,31719,29181,34068,
2018,29286,30975,31498,34540,35897,38092,38897,37687,36939,35041,31982,29421,34188,
2019,29385,29854,33215,35897,36563,39093,40696,39309,36924,35489,32734,30601,34980,
2020,29191,31152,29370,24660,30709,36203,38271,37963,38385,34836,29748,28843,32444,
2021,29417,30121,32995,35852,37519,40617,42766,39745,40336,37809,34622,33675,36289,
2022,29930,32386,34011,37021,38711,40244,40642,39601,40045,38021,32819,30407,36153,
2023,30922,31979,32628,37239,40236,42673,43260,43608,42484,39831,35815,32979,37805,
2024,31075,34155,34985,39216, , , , , , , , , ,