Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
1995,4245,4409,4409,4939,4984,4994,4987,5106,5104,4994,4639,4271,4757,
1996,3704,4071,4547,4943,5016,5211,5042,5087,5113,5008,4521,4183,4704,
1997,4071,4388,4489,4956,5141,5186,5034,5135,5153,4893,4645,4184,4773,
1998,3990,4467,4574,5061,5045,5267,5214,5165,5173,4986,4607,4281,4819,
1999,4255,4296,4530,4958,5153,5220,5156,5256,5179,5158,4753,4333,4854,
2000,4132,4414,4612,5116,5072,5132,5100,5183,5059,4939,4440,4088,4774,
2001,3966,4265,4507,4888,5161,5104,5021,5075,5087,4909,4615,4149,4729,
2002,4052,4280,4411,5023,5157,5113,5178,5171,5174,5236,4824,4492,4843,
2003,4397,4507,4425,5171,5278,5308,5358,5212,5244,5169,4588,4501,4930,
2004,4061,4502,4810,5243,5427,5371,5176,5103,5200,5092,4741,4466,4933,
2005,4219,4716,4779,4990,5089,5293,5105,5136,4984,4953,4619,4242,4844,
2006,4291,4525,4656,4973,5140,5266,5107,5144,4895,5004,4654,4306,4830,
2007,4164,4453,4732,5075,5187,5231,5188,5358,,5161,5009,4574,,
2008,3656,3818,4354,4923,5150,4976,5018,4937,5072,5020,4572,4026,4627,
2009,3971,4483,4370,,5258,5243,5216,5113,5121,5006,4423,4247,,
2010,4172,4536,4774,4975,4973,5254,5221,5208,5139,4976,4439,4058,4810,
2011,4081,4079,4194,4643,4845,4923,,,,4834,4383,4236,4489,
2012,3883,4184,4252,4728,4964,4943,4962,5109,4845,,4413,4042,4590,
2013,3945,4223,4492,4753,4916,4963,4927,5031,4930,4891,4413,4023,4626,
2014,4048,4094,4454,4813,4930,4916,4927,5040,5030,4899,4472,4249,4656,
2015,4094,4533,4662,5003,5166,5315,5146,5020,5086,5053,4655,4235,4831,
2016,4247,4602,4667,5251,5288,5364,5194,5296,5242,5001,4743,4032,4911,
2017,3918,4252,4485,5001,5334,5436,5351,5375,5273,5248,4764,4291,4894,
2018,4249,4269,4571,5034,5365,5436,5321,5618,5614,5218,4777,4333,4984,
2019,4285,4025,4511,5082,5427,5554,5389,5374,5416,5236,4850,4519,4972,
2020,3979, ,4307,4116,4937,5362,5389,5567,5351,5207,4597,4289,4816,
2021,4452,4246,4807,5393,5596,5573,5639,5562,5472,5435,4959,4340,5123,
2022,4178,4667,4817,5133,5423,5415,5586,5599,5539,5596,4771,4217,5078,
2023,4584,4772,4807,5429,5755,5734,5613,5599,5648,5564,4932,4612,5254,
2024,4272,4771,4977, , , , , , , , , , ,