Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
1992,,,18371,19047,18064,16873,14253,26544,26636,25158,23695,23269,,
1993,21556,24692,26445,28343,22400,26307,26719,27672,29690,29656,28823,28459,26730,
1994,27753,30018,31604,31167,30382,32143,29305,31083,32201,31579,30129,28816,30509,
1995,29683,31218,31878,32687,31453,32785,31028,31958,32839,33164,31559,29412,31639,
1996,29998,32361,32588,33648,31703,32780,30108,31951,33136,32612,31790,28766,31787,
1997,29462,32385,31892,33388,32666,33904,31036,32523,33786,33516,32700,31284,32379,
1998,30424,33933,33759,34584,33060,34830,31858,32958,33570,33042,28548,31084,32638,
1999,31672,32567,33841,35258,32222,33136,30435,31525,32497,33205,31808,30265,32369,
2000,29374,31220,31348,32540,31580,31825,32325,31515,34153,31663,29801,30183,31461,
2001,28666,31456,32271,33240,31877,33455,31674,33916,34644,35388,33826,31414,32652,
2002,33084,35388,34521,37348,35354,34592,33505,35088,35757,36849,34519,33646,34971,
2003,33065,34651,33429,35882,33814,34223,32747,33076,35940,36367,33279,33762,34186,
2004,32304,35402,36814,37590,34752,35303,33502,34663,37085,36294,35498,34454,35305,
2005,35130,37406,37506,38250,35527,37105,34412,37342,37095,36939,36083,36461,36605,
2006,34948,37624,37826,37332,36906,36940,34132,37267,37404,37310,36094,33972,36480,
2007,35466,37762,37952,38250,37145,36498,34816,37232,37024,39269,36380,33304,36758,
2008,32692,36864,35827,38398,36488,34668,34033,34352,36748,36643,33183,32875,35231,
2009,32612,36401,35572,37924,35240,35652,34488,34529,37324,36728,34632,33623,35394,
2010,33199,36915,37712,37682,35744,36452,35310,36606,38331,37358,35058,34037,36200,
2011,34925,36994,37217,37985,36505,36614,34951,36764,37527,37490,35071,34445,36374,
2012,33850,36957,36587,37851,36632,35940,33938,35771,37511,37554,35582,34353,36044,
2013,32217,36887,37183,38314,37084,36775,34951,36731,38032,37428,35283,33081,36164,
2014,33228,36210,37240,38470,37209,36980,34890,36554,37834,37965,33522,34633,36228,
2015,34287,37624,37778,38684,37210,37331,36127,37041,38220,38125,36001,34415,36904,
2016,34870,37680,37910,39592,37822,37779,36298,38274,39435,39615,36886,33329,37458,
2017,31463,37499,38620,39728,38276,38468,36209,38728,39331,39445,37587,35860,37601,
2018,36530,38894,38985,40815,40307,39056,38078,40499,40724,40848,38910,36547,39183,
2019,37096,38663,40476,41440,39411,39262,37976,40107,41143,43823,43555,40897,40321,
2020,39014,42308,31303,18820,23789,28970,27892,30384,30810,31673,27881,27120,29997,
2021,28754,30224,33202,34065,33988,35293,34493,36020,36221,36151,33447,32783,33720,
2022,32239,35986,36837,37688,36542,35884,34624,37536,38944,41624,39826,33146,36740,
2023,35509,37413,38236,39023,38278,37549,35822,38123,39349,39491,36797,35085,37556,
2024,33026,38122,37445, , , , , , , , , , ,