Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
1992,,,1934,2173,2310,2487,2468,1933,1613,1859,1777,1583,,
1993,1493,1732,1984,2420,2597,2840,2941,2304,1911,2197,2098,2803,2281,
1994,2607,2786,3156,3417,3569,3762,3444,3667,3081,3343,2960,2836,3222,
1995,2921,3120,3470,3827,3987,4174,4019,4422,4912,4936,4589,4289,4056,
1996,4210,4328,4769,5649,5896,5757,5936,6861,6779,6423,5886,4492,5582,
1997,4100,4509,4908,5793,5015,5472,5281,5408,5822,5598,5393,5421,5227,
1998,6082,7234,7483,8105,8342,8255,6783,6814,6694,6252,5038,4800,6824,
1999,4756,4687,5134,5913,5843,5815,5495,5408,5574,5516,5043,4499,5307,
2000,4427,4372,5019,5977,6021,5884,5298,5485,5626,5462,4957,4784,5276,
2001,4352,4869,5321,4095,5896,5969,5528,5880,5875,5802,5512,4662,5313,
2002,4727,5214,5595,6696,3623,6095,5887,5956,6250,6343,5539,5340,5605,
2003,5720,6126,5699,5808,591,4806,5378,5773,7348,7525,7032,6092,5658,
2004,5403,6087,6979,7695,7489,7306,6729,7233,7245,6981,6603,6479,6852,
2005,6326,6989,7586,8221,8180,8285,7716,8224,8110,7980,7321,6777,7643,
2006,7084,7762,8104,8803,9129,8800,8127,8738,8535,7959,7478,6901,8118,
2007,6987,7452,8028,8754,9125,9157,8441,8390,8325,8459,7473,6762,8113,
2008,5555,6149,6710,8290,7987,7222,7481,7456,7778,7584,6783,6172,7097,
2009,6135,6611,6795,8100,8396,7544,7130,7505,7864,7513,7027,6433,7254,
2010,6421,6973,7433,8031,8315,8094,7615,7601,8256,7825,6925,6746,7520,
2011,,7178,7273,8233,8541,8237,7514,7169,7284,7374,7099,7043,7540,
2012,6942,7413,7178,8952,9233,9319,9153,,,,,7668,8232,
2013,8074,8873,9324,10058,10078,9680,9062,9741,10407,10906,10288,9635,9677,
2014,9712,10170,11222,12918,13477,12735,12048,11338,10509,10277,8411,9012,10986,
2015,8697,9775,9824,10997,10877,9891,9444,9771,10482,10119,9310,8992,9848,
2016,9077,9922,10053,11568,12308,11855,11422,12084,12395,12110,11507,10319,11218,
2017,9086,11309,12040,13646,14811,13794,13126,13964,14167,14486,13439,12963,13069,
2018,12694,13564,14028,15692,16612,15545,15060,15703,16167,15651,14497,14422,14970,
2019,14135,14286,14471,15848,16677,16066,15003,15933,16706,16366,15449,15558,15542,
2020,15186,16553,14086,11831,15166,17037,16873,17130,17627,17887,16315,16092,15982,
2021,15943,16309,18149,19965,20042,20031,19333,19607,19802,19776,17815,18603,18781,
2022,17111,17992,18571,20016,19984,19176,19058,20465,21231,21278,19070,18579,19378,
2023,19015,19813,19777,22094,23628,23920,22334,23361,23201,23296,21808,21560,21984,
2024,19252,21840,22606, , , , , , , , , , ,