YEAR,Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec,Annual 24-hr Avg.
2000,,,,,,,,66938,64220,63674,60908,59974
2001,56380,61078,65587,66474,66525,68772,67762,70073,66318,66062,63381,59540,64829
2002,59591,64625,65979,67348,69351,69953,68436,70545,67860,69693,66781,65111,67106
2003,62153,67892,,69157,69926,72732,71235,71911,70830,71086,66359,66817
2004,61028,66843,71899,71977,70085,73153,71743,,74240,71771,69133,68306
2005,70598,71369,74839,73849,73766,77856,75732,78160,73624,73855,72343,69818,73817
2006,69209,74044,76830,74440,76369,79666,74393,79495,75727,76669,75285,72568,75391
2007,72000,76595,76358
2008,
2009,,,,,77176,80577,82597,78094,76097