Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
1990,902,984,1074,1100,1158,1227,1177,1296,1179,1197,1114,974,1116,
1991,996,1126,1248,1410,1388,1444,1357,1575,1503,1484,1381,1403,1361,
1992,1419,1546,1755,1795,1809,1792,1861,1831,1842,1804,,,,
1993,,,,,2117,2237,1989,1883,1978,1981,1933,1955,,
1994,1885,2084,2307,2415,2403,2375,2242,2415,2734,2366,2216,2060,2292,
1995,2151,2287,2344,2473,2543,2612,2494,2626,2565,2441,2314,2037,2407,
1996,2036,2229,2388,2523,2494,2490,2386,2729,2926,2620,2489,2419,2477,
1997,2327,2367,2298,2414,2370,2318,2413,2396,2620,2691,2511,2407,2428,
1998,2326,2510,2574,2698,2685,2651,2577,2703,2772,2723,2532,2451,2600,
1999,2435,2505,2739,2904,2914,2796,2698,2789,2914,3088,2652,2471,2742,
2000,2434,2671,2894,3141,3133,2978,3224,3248,3453,3479,3295,3252,3100,
2001,2947,3228,3385,3686,3741,3650,3429,3610,3663,3680,3495,3384,3492,
2002,3342,3662,3719,4044,4202,4174,3862,3697,3898,3991,3919,3836,3862,
2003,3775,4110,4131,4415,4576,4781,4638,4663,4665,4788,4404,4542,4457,
2004,4070,4507,5093,5153,5051,5130,5116,5253,5293,5327,5023,5192,5017,
2005,5041,5802,5764,5985,5941,5752,6210,6400,5102,5591,5459,5448,5708,
2006,5467,5981,6718,7353,7380,7704,7339,7725,7775,7828,7410,6531,7101,
2007,6009,6436,6700,6793,6692,,6767,7398,7510,7430,6329,5978,,
2008,5508,6104,6423,6796,6732,6267,6166,5871,6050,6070,5735,5548,6106,
2009,5515,5633,6044,6544,6619,6287,6054,6252,6379,6264,5929,5800,6110,
2010,5798,5950,6088,6097,6003,6307,6095,6284,6354,6318,6067,5681,6087,
2011,5737,6040,6071,6466,6556,6403,6042,6322,6458,6502,6171,6038,6234,
2012,5852,6363,6360,6916,6840,6489,6376,6705,6770,6713,6352,6245,6498,
2013,5357,6329,6667,6723,6693,6510,6145,6648,7047,6911,6567,6200,6483,
2014,5940,6344,6918,7397,7251,7237,7214,7420,7544,7455,6429,6798,6996,
2015,6430,6899,7331,7979,8134,7934,7492,7721,8114,8287,7649,7240,7601,
2016,6921,7561,7825,7989,9290,9102,7571,7703,8808,8559,7916,6974,8018,
2017,6156,8323,8520,8881,9025,9367,8671,9046,9574,9639,8833,8729,8730,
2018,7901,7963,8232,8366,8773,9055,8849,9152,8469,8541,8124,8019,8454,
2019,7470,7464,8097,9091,9310,9294,6886, , ,8409,8173,8546,8476,
2020,8149,8940,8161,7148,7571,7807,7452,10097,11119,11247,10245,10481,9035,
2021,10355,10747,11804,12360,10335, , , , , , , , ,
2022, , , , , , , , , , , , , ,
2023, , , , , , , , , , , , , ,
2024, , , , , , , , , , , , , ,