YEAR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual 24-hr Avg.
1990	2820	3202	3714	4167	4201	5569	6209	5235	4377	3894	3518	2738
1991	2874	3385	3654	3983	4620	5615	6714	5842	4762	4369	3595	3449
1992	3461	3630	4336	4600	5631	5933	6125	5365	4425	4514	3812	3790
1993	3442	3641	4362	4721	5869	5884	6531	6032	5267	4859	4131	4027
1994	3826	3988	4763	5154	5962	6863	7280	6092	5366	5269	4480	4045
1995	4054	4380	4857	5352	5961	6665	7213	7029	5863	5496	4580	4202
1996	4122	4577	4939	5712	6257	7184	7631	6824	5781	5625	4935	3882
1997	3060	3369	3523	3939	4261	4286	4657	4629	3905	3571	3295	3086
1998	3019	3331	3616	4062	3984	4293	4774	4568	3741	3359	2950	2965
1999	2959	2958	3319	3797	3947	4227	4616	4261	3684	3131
2000			3813	4036	3769	4412	4645	4462	3891	3823	3869	3434
2001	3176	3396	3858	4386	4367	4690	4738	4641	4172	3826	3459	3204
2002	3109	3316	3487	4154	4284	4639	5053	4487	4015	3835	3677	3514
2003	3517	3597	3742	4152	4459	4804	5263	4657	4130	3889	3505	3499
2004	3230	3469	3893	4307	4394	4875	5125	4600	4105	3969	3694	3722
2005	3509	3788	3916	4275	4443	4660	5071	4736	4146	3974	3667	3575
2006	3530	3829	3794	4392	4612	4670	5051	4648	4246	4038	3803	3634
2007	3603	3750	4046	4392	4560	4860	4985	4693	4315	4197	3936	3698
2008	3496	3783	4118	4787	4766	4968	5121	4990	4460	4226	4134	3699
2009	3639	3946	3998	5012	5040	4749	6328	5802	4851	3245	2966	2638
2010	2540	2771	2901	3190	3298	3233	3630	3403	3238	3220	2724	2578
2011	2577	2681	2742	3177	3349	3346	3489	3714	3430	3271	2763	2720
2012	2646	2811	2910	3593	3786	3618	3781	3745	3515	3314	2982	2889
2013	2666	3094	3837	2607

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