YEAR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual 24-hr Avg.
1990	5448	5522	7022	7594	8145	9341	10649	11181	9504	7988	7269	6687	8045
1991	5951	6011	7634	8245	8822	10057	11465	11924	10135	8513	7745	7125	8653
1992	6341	7296	8004	8657	9967	11081	13359	13668	11619	9360	8436	7482	9641
1993	6928	7666	8299	9115	10519	11774	13982	15094	12375	10651	9456	8955	10421
1994	8099	8107	9221	10092	11341	13070	14899	14783	12242	10512	9043	8564	10850
1995	8624	9066	9504	10500	11719	12687	14975	15446	12926	11256	10171	10085	11413
1996	8489	9339	9347	10757	12351	13652	15715	16214	13044	11347	9202	9045	11542
1997	8577	9286	9660	10783	12401	13408	15023	16065	13183	11738	10764	10108	11750
1998	8957	10144	10827	11918	12945	13806	15261	16433	13823	12338	11306	10232	12333
1999	10059	10421	11624	12340	12815	14503	16891	17451	14322	14441	11359	10989	13101
2000	9140	10932	11308	11943	12299		14843	17266	13251	12056	10935	10676
2001	10309	10708	11388	12127	13608	14742	16672	17623	14344	12763	11615	11041	13078
2002	10417	11334	11048	12546	13778	15181	17216	18099	14494	13027	12208	11180	13377
2003	11147	11648	11547	12719	14059	15488	17780	19270	14481	13403	11106	11234	13657
2004	10412	11782	12531	13663	13835	16078	19097	18673	15441	13956	12622	12381	14206
2005	10329	12295	12042	13430	14666	16201	19183	19386	15297	13681	12914	12357	14315
2006	11881	12739	13285	14086	14958	16422	19090	19449	15691	14050	12924	13073	14804
2007	11973	12834	13671	14328	15492	17095	19762	20460	16017	14435	13319	12246	15136
2008	11078	12813	12321	13253	14783	15935	18876			13003	12418	10803
2009	11083	11882	11986	13097	14454	15717	18452	18883	15202

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