YEAR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual 24-hr Avg.
1990	2944	3186	3396	3487	3705	3497	3378	3602	3459	3566	3390	2696	3359
1991	2568	3166	3256	3436	3294	2900	2577	2756	2853	3216	3417	3613	3086
1992	3351	3678	3927	4281	4383	4338	4302	4603	4353	4590	4865	5157	4333
1993	3229	3537	3806	4088	4147	4232	4096	4374	4231	4243	3950	4170	4011
1994	3813	3847	4287	4494	4460	4497	4224	4490	4197	4340	3981	4075	4228
1995	3796	4082	4283	4555	4730	4556	4429	4670	4729	4874	4457	4449	4468
1996	4197	4447	4687	4928	5042	5108	4922	5234	4990	5122	4511	4201	4782
1997	4004	4631	5047	5039	4816	4645	4453	4665	4783	4962	4645	4718	4701
1998	4203	4548	4920	5248	5269	5268	5118	5060	5280	5365	4907	5610	5066
1999	4905	5054	5492	5825	6000	5952	5674	5753			5276	5503
2000	5271	5718	5678	5264	5612	5978	5110	5733	5770	5842	5570	5635	5598
2001	5130	5612	5880	6080	6017	6150	5848	6048	5979	6018	5755	5544	5838
2002	5223	5548	5656	5940	5905	5601	5452	5568	5618	5303	5240	5338	5533
2003	5432	5954	5984	5981	6506	6583	6506	6778	6974	6993	6375	6544	6384
2004	6006	6563	7192	7443	7081	7604	7240	7477	7564	7338	7029	7073	7134
2005	6830	7635	8038	7761	7387	6141	7466	11031	8614	9115	7921	7719	7972
2006	7893	8354	9968	11534	11884	11821	10972	10825	10896	10820	10260	7957	10265
2007	6689	7061	7318	7314	7674	7836	7355	7357	7088	6975	6560	6182	7117
2008	6715	7496	7694

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