Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
1990,2944,3186,3396,3487,3705,3497,3378,3602,3459,3566,3390,2696,3359,
1991,2568,3166,3256,3436,3294,2900,2577,2756,2853,3216,3417,3613,3086,
1992,3351,3678,3927,4281,4383,4338,4302,4603,4353,4590,4865,5157,4333,
1993,3229,3537,3806,4088,4147,4232,4096,4374,4231,4243,3950,4170,4011,
1994,3813,3847,4287,4494,4460,4497,4224,4490,4197,4340,3981,4075,4228,
1995,3796,4082,4283,4555,4730,4556,4429,4670,4729,4874,4457,4449,4468,
1996,4197,4447,4687,4928,5042,5108,4922,5234,4990,5122,4511,4201,4782,
1997,4004,4631,5047,5039,4816,4645,4453,4665,4783,4962,4645,4718,4701,
1998,4203,4548,4920,5248,5269,5268,5118,5060,5280,5365,4907,5610,5066,
1999,4905,5054,5492,5825,6000,5952,5674,5753,,,5276,5503,,
2000,5271,5718,5678,5264,5612,5978,5110,5733,5770,5842,5570,5635,5598,
2001,5130,5612,5880,6080,6017,6150,5848,6048,5979,6018,5755,5544,5838,
2002,5223,5548,5656,5940,5905,5601,5452,5568,5618,5303,5240,5338,5533,
2003,5432,5954,5984,5981,6506,6583,6506,6778,6974,6993,6375,6544,6384,
2004,6006,6563,7192,7443,7081,7604,7240,7477,7564,7338,7029,7073,7134,
2005,6830,7635,8038,7761,7387,6141,7466,11031,8614,9115,7921,7719,7972,
2006,7893,8354,9968,11534,11884,11821,10972,10825,10896,10820,10260,7957,10265,
2007,6689,7061,7318,7314,7674,7836,7355,7357,7088,6975,6560,6182,7117,
2008,6715,7496,7694,7950,7177,6919,6411,6424,6510,6602,6155,5828,6823,
2009,5778,4380,5827,6600,6608,6488,6316,6432,6451,6438,6012,5887,6101,
2010,5717,6291,7021,7427,7387,6894,6663,6651,6739,6686,6170,5908,6630,
2011,5993,6329,6432,6727,6748,6726,6474,6650,6773,6697,6178,6215,6495,
2012,6007,6450,6554,7002,7001,6771,6568,6735,6801,6751,6408,6177,6602,
2013,5524,6373,6691,5066,4211,5232,6373,6881,6777,6734,6444,6043,6029,
2014,5937,6362,6662,6886,6611,6957,6891,7101,7167,7086,6231,6399,6691,
2015,6246,7127,6944,6937,6901,6722,6588,7063,6966,7013,6663,6639,6817,
2016,6461,7065,7363,7980,8000,,,7078,,5254,6416,5877,,
2017,5388,6475,7235,7047,6772,8038,7660,7810,7981,7969,7566,7338,7273,
2018,7158,7742,8033,8572,8767,8717,8642,9061,9457,9182,8355,8001,8474,
2019,7649,7962,8976,9789,9878,9834,10664,11597,11406,9997,8521,8972,9604,
2020,8806,9449,8430,7227,9689,10402,10261,10640,625, , , ,9363,
2021, , , , ,8965,11789,11731,13373,12898,13237,12225,11370,11948,
2022,10126,10841,10718,11853,12518,12624,14123,14337,14131,14145,12971,11521,12492,
2023,11871,12443,12452,13710,13618,12326,8357,8997,9033,9086,8808,10164,10905,
2024,9193,10949,11357,11958, , , , , , , , , ,