Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
1990,31007,33582,35643,37875,36314,39142,38439,39840,37373,38552,37484,31891,36435,
1991,32301,36137,36001,37372,36809,37321,40887,42789,40834,42514,43194,38502,38732,
1992,38042,40092,40923,43897,39717,47615,47305,49441,47259,49207,38186,34002,43093,
1993,32569,36268,38085,41638,42439,46580,46482,47541,45469,44364,42058,42479,42193,
1994,38529,40216,47486,43108,44528,49533,44677,46626,44975,43486,42193,39871,43785,
1995,39578,40765,44181,45297,46583,48529,45022,46484,45498,47353,43724,43203,44685,
1996,41014,43386,47643,49172,50922,52121,50085,51106,47071,49052,47418,43493,47707,
1997,44013,48009,50815,52253,54366,57158,56187,57878,54779,54109,52019,52096,52807,
1998,48897,53098,55606,57011,57194,62103,59053,56182,57969,59140,56176,54028,56371,
1999,51902,52627,56792,57913,60072,63818,62911,63739,60410,60956,57475,55441,58671,
2000,51047,53318,57564,60333,62539,66180,64559,66539,62335,62595,58735,57722,60289,
2001,54459,58825,62490,63511,64025,66291,64362,66500,62878,62313,58629,51156,61287,
2002,53458,58211,60652,62490,64494,65867,63354,63160,59434,61856,57449,54622,60421,
2003,54801,57126,56534,59729,61448,63436,63921,63467,60443,59083,55037,55955,59248,
2004,51695,55690,60568,61628,61178,63196,64222,64348,61534,61591,58695,58520,60239,
2005,54372,56783,60674,61649,62257,65839,64439,66021,60728,60870,58894,57016,60795,
2006,55043,59191,61941,62306,64112,67852,65280,66561,61938,60123,58946,58014,61776,
2007,56942,59700,62660,62940,64508,65717,64386,66192,59373,,,,,
2008,,,,,,,,60160,56370,55961,52258,48016,,
2009,47417,51753,53427,56102,57136,59406,58990,,,,,,,
2010,,,,,,,,,,,,,,
2011,,,,,,,,,58274,59319,55500,55524,,
2012,52789,55948,57572,59972,61565,64117,62979,64283,61476,61934,58648,55475,59730,
2013,50274,55400,60074,61607,62734,66757,64393,65437,62990,63703,60340,53826,60628,
2014,54495,56377,56903,58006,59332,60839,58293,59407,57756,58160,52578,56108,57355,
2015,54986,58920,60849,62640,64018,66431,63559,62029,58113,64077,59165,61956,61395,
2016,59559,61713,66631,68958,70530,73974,72039,73033,70701,71994,67305,60170,68051,
2017,54345,69703,74383,76458,78097,80231,78794,79288,76684,78482,73402,69276,74095,
2018,68254,70949,75208,78407,80179,83228,80974,81525,79422,79725,75440,68961,76856,
2019,68727,68531,75822,78933,80384,83041,81592,81940,80002,79980,74229,71643,77069,
2020,69089,73154,63907,49253,62680,71310,72069,73415,73091,73397,65459,63095,67493,
2021,63427,64132,73296,76441,78725,81677,83204,81380,78425,78912,75414,74803,75820,
2022,66007,71834,75566,77605,80115,81477,79628,80397,78621,79677,72610,66921,75871,
2023,68566,71510,73709,78677,81843,83988,77284,83560,80884,81289,78163,71229,77559,
2024,64370,74296,76761, , , , , , , , , , ,