YEAR,Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec,Annual 24-hr Avg.
1997,1773,2324,2423,2650,3340,3751,4684,4250,3569,3344,2837,2523,3122
1998,2365,2526,2721,3145,3478,4379,5006,4770,3936,3685,2954,2703,3472
1999,2684,2611,3045,3584,3952,4744,5473,4840,4442,4215,3434,3114,3845
2000,2954,3262,3621,4319,4704,5695,6095,5517,4683,4510,3376,3538,4356
2001,3413,3567,4009,4588,5294,5810,6264,5760,4970,4797,4135,3576,4682
2002,3514,3650,3764,4584,5353,6030,6414,5635,4858,4722,3957,3586,4672
2003,3642,3631,3792,4159,4972,5846,6401,5510,4705,4658,3759,3532,4551
2004,3309,3462,3869,4433,4726,5492,6109,5485,4618,4414,3692,3443,4421
2005,3385,3614,3768,4201,4827,5428,6419,5619,4496,4311,3689,3302,4422
2006,3394,3641,3604,4284,5034,5847,6589,5653,4934,4668,3853,3534,4586
2007,3496,3619,4028,4478,5093,5997,6459,5572,4852,4553,3882,3437,4622
2008,3235,3394,3771,4229,5057,5359,5979,5622,4498,4396,3719,3107,4364
2009,3221,3432,3501,4255,5287,5403,6609,5950,4951