YEAR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual 24-hr Avg.
1990	7297	7880	8250	7594	8635	10146	11445	11403	9780	9186	7866	7582	8931
1991	7506	7754	7698	7435	8271	9434	11071	11161	9323	9027	7419	7877	8675
1992	7645	8025	8374	8011	8666	9733	11388	11502	8983	8290	7324	7637	8830
1993	6589	6918	7553	7164	7299	8407	9195	8818	7990	7613	6699	6967	7607
1994	7992	8392	8665	7662	7806	8991	11244	11365	10449	9729	7848	8162	9034
1995	9149	9752	9706	9439	10283	12044	13752	12983	12165	11405	10057	10195	10911
1996	9516	10276	10548	9920	10695	12567	14041	14094	12417	11736	9942	10008	11313
1997	9874	10667	10669	10122	10804	12553	14485	14473	12494	11908	10328	10877	11605
1998	10090	10606	10858	10471	11239	13071	14957	14723	13412	11671	10543	11085	11894
1999	10539	10554	11261	10578	11479	13395	15467	15119	13876	12910	11253	11595	12336
2000	10726	11395	11769	11190	12109	14187	15753	15371	13678	13072	11122	11869	12687
2001	10999	11776	12245	11319	12343	14140	15880	15484	13450	12964	11476	11000	12756
2002	11458	11989	11794	12372	12663	14249	16067	15328	13228	13473	11448	12025	13008
2003	11973	12169	11887	12170	12857	14644	16545	16157	14203	14014	11582	12655	13405
2004	11608	12317	12657	12595	13147	15367	16732	16137	14708		11501	12711
2005	11271	12269	12738	12260	13182	14993	16317	15842	14588	13389	12118	12521	13457
2006	11158	11694	12164	11828	13050	14755	15628	15493	13966	13412	11507	12435	13091
2007	11895	12192	12250	11979	12975	14543	16084	15692	13509	13667	11994	12319	13258
2008	10818	11876	11793	11636	12260	13750	15296

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