YEAR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual 24-hr Avg.
1998	3370	3770	3872	3991	4137	4307	3739	3982	4258	4411	3935	3578	3946
1999	3663	3744	4008	4206	4228	4734	4825	5025	4583	4624	4064	3686	4283
2000	3580	3801	4052	4162	4276	4562	4731	4823	4431	4233	3856	3461	4164
2001	3564	3635	4045	4170	4343	4624	4723	4887	4475	4269	3816	3285	4153
2002	3446	3777	3800	3873	4295	4483	4796	5013	4570	4969	4278	3735	4253
2003	3458	4087	4205	4579	4300	4701	4734	5351	4869	4450	3630	3260	4302
2004	2994	3472	3753	3844	4009	4192	4615	4623	4509	4113	3591	3340	3921
2005
2006
2007
2008

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