Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
1990,2662,2890,3345,3639,3914,4402,4062,4032,3934,4168,3390,2914,3616,
1991,2685,3055,3404,3598,3993,4564,4721,4659,4266,4458,3845,3275,3882,
1992,3087,3411,3740,3882,4035,4227,,,,,,,,
1993,,,,,,,4610,4724,4583,4778,4034,3660,,
1994,3515,3848,4156,4143,4551,4452,4725,4738,4676,4929,4161,4103,4337,
1995,3826,4158,4382,4669,4920,5377,5189,5281,5188,5317,4516,4092,4743,
1996,3719,4079,4580,4868,5185,5743,5384,5526,5327,5553,4741,4379,4924,
1997,2596,4486,4734,4909,5191,5585,5750,5671,5329,5490,4749,4503,4916,
1998,4038,4587,4852,5186,5204,5891,5690,5734,5664,5972,5150,4639,5217,
1999,4506,4693,5170,5309,5600,6194,5933,5944,5985,5965,5232,4686,5435,
2000,4288,4756,5031,5348,5590,6406,5750,5449,5627,5830,4873,4581,5294,
2001,4219,4599,5016,5392,5850,6124,5857,5861,5907,6071,5358,4708,5414,
2002,4594,4971,5161,5647,6118,6562,6016,6161,6104,6348,5436,4992,5676,
2003,4747,5161,5345,5616,6147,6652,6115,6099,6186,6409,5448,5171,5758,
2004,4710,5188,5698,6040,6191,6828,6424,6267,6301,6416,5493,5305,5905,
2005,4815,5380,5741,5896,6238,6806,6452,6318,6057,6161,5484,5159,5876,
2006,4940,5394,5596,5947,6263,6914,6396,6504,6459,6479,5718,5284,5991,
2007,5065,5391,5894,6133,6438,6691,6305,6439,6625,6491,5651,4994,6010,
2008,4729,5128,5364,5614,5985,6244,5953,5902,5873,6104,5343,4840,5590,
2009,4618,5112,5387,5882,6244,6724,6474,6318,6469,6724,5800,5194,5912,
2010,4764,5274,5541,5830,6035,6451,6029,5758,6148,6178,5231,4652,5658,
2011,4548,4800,4899,5422,5545,5870,5734,4380,5715,5817,5018,4672,5276,
2012,4320,4715,4920,5209,5559,6066,5725,6067,5717,5852,5143,4804,5341,
2013,4300,4810,4741,4975,5424,5762,5358,5369,5474,5569,4860,4363,5084,
2014,4104,4381,4850,5117,5621,6000,5697,5688,5699,5845,4847,4622,5206,
2015,4420,4925,5273,5456,5892,6079,6026,5782,6022,6039,5359,4768,5504,
2016,4492,4979,5319,5634,6068,6396,6180,6185,6306,6280,5661,,,
2017,4299,4704,5476,5884,6358,6528,6312,6433,6096,5974,5239,4876,5682,
2018,4650,4961,4915,,,,6167,6095,6247,6350,5616,5074,5501,
2019,4921,4931,5731,5871,6518,6874,6524,6592,6646,6599,5907,5353,6039,
2020,5158,5569,5281,4850,6258,6724,6676,6842,7424,7366,5936,5569,6138,
2021,5395,5477,7251,7206,7705,8319,7623,7292,7471,7524,7717,6192,7098,
2022,5674,5992,6437,6847,7298,7553,7257,7202,7375,7429,6288,5424,6731,
2023,5567,5765,6045,6590,7261,7784,7597,7438,7585,7421,6689,5715,6788,
2024,5250,6075,6477, , , , , , , , , , ,