Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
1998,6370,6815,8227,9188,9457,7595,12683,,8907,8987,8793,7774,,
1999,7903,,,,,,,,,,,,,
2000,4496,4764,5704,5910,6174,7219,7797,8102,6505,6100,5376,4776,6077,
2001,4411,4828,5869,6017,6394,7365,7880,8169,6929,6180,5753,4969,6230,
2002,4462,4715,6135,6146,,8034,8271,8424,6708,6431,5923,5680,,
2003,4972,5067,6003,6205,6478,,8441,8598,6853,6613,6035,5507,,
2004,4552,4962,6292,6607,6795,7684,8367,8252,7029,6614,6175,5576,6575,
2005,,,,,,,,,,,,,,
2006,,,,,,,,,,,,,,
2007,,,,,,,,,,,,,,
2008,,,,,,,,,,,,,,
2009,,,,,,,,,,,,,,
2010,,,,,,,,,,,,,,
2011,5269,5545,6570,6839,7235,8228,9415,8992,7570,7019,6385,6173,7268,
2012,5234,5674,,,,,,,,,,,,
2013,,,,,,,,,,,,,,
2014,,,,,,,,10008,8281,,,6823,,
2015,7003,7085,8595,8861,9396,10935,11414,,9860,,,,,
2016,7290,7172,8584,8627,8903,,,,,,,,,
2017,6286,7199,9252,9085,10303,10707,11961,11896,,9543,8779,,9466,
2018,,7871,9308,9531,10305,11787,12916,11750,10984,9650,9075,8128,9907,
2019,7436,7255,9498,9853,10534,11816,12670,12053,10608,10341,9074,8734,9989,
2020,7654,7999,8592, ,9446,11100,11910,11857,11361,10752,9330,8499,9838,
2021, , , , , , , , , ,11687,11302,9586, ,
2022,8781,9786,11520,11613,12505,13863,13905,13315,12256,11768,10867,9346,11627,
2023,8565,8878, , , , , , , , , , , ,
2024, , , , , , , , , , , , , ,