YEAR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual 24-hr Avg.
1992									16368	18748	17638	17830
1993	16061	19376	20515	21236	15299	19552	20720	21507	23234	23282	23454	20880	20419
1994	21853	23746	25012	24719	24160	25281	23719	25130	25928	25496	24586	23829	24453
1995	23594	25547	26972	25415		26514	24934	26270	26979	27288	26125	24655
1996	24739	26235	27358	27551	25882	26764	25004	26350	27382	26834	26433	23750	26190
1997	24415	26779	26596	27940	26813	27192	25487	26693	27890	27530	26982	25721	26670
1998	25144	27820	27760	28373	27067	28065	26044	27202	27486	27644	25816	25982	27034
1999	26375	27827	28355	29207	27787	28088	26319	27754	28403	28912	27622	26329	27748
2000	26212	28179	25123	25033	27505	27523		27747	27541	27716	26244	26074
2001	25238	27734	28153	29194	28091	28744	27211	28818	29497	30310	29280	27132	28284
2002	28606	30553	29988	32517	30691	29614	28882	30344	30949	31952	29885	29186	30264
2003	30343	32491	31548	33543	31715	31742	30679	30873	32543	32389	29392	29822	31423
2004	28500	31096	32309	32976	30456	30850	29081	30115	32218	30508		28138
2005	29992	32044	32193	32730	30718	31609	29333	31917	31476	31717	31197	29851	31231
2006	30140	32214	32699	32196	31717	31692	29267	31907	32271	32197	31438	29424	31430
2007	30664	32179	32528	32989	31862	31154	29795	31931	31748	33928		25876
2008	28757	32077	31097

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