YEAR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual 24-hr Avg.
1990	26181	27752	27348	34257	34546	36025	34288	34738	33364	31946	29233	29967	31652
1991	31139	33953	33147	35501	35501	41827	41125	41536	32408	33330	34465	31100	35425
1992	33226	36229	36034	37990	36877	38985	37316	38650	40672	40827	37342	37889	37769
1993	35617	39770	41329	43824	42124	43224	40766	41723	43182	42037	39886	39736	41097
1994	38886	41477	43797	44046	43447	45638	41539	43807	44564	42754	40941	40434	42607
1995	40524	42845	43397	45321	44273	45444	43186	44299	44561	44145	41143	40568	43309
1996	40739	41659		45617	47904	47711	42650	44504	44729	43261	41145	39800
1997	40623	43746	43994	46542	45779	46791	44600	47453	46587	45926	43762	42472	44856
1998	41667	45462	45806	47568	46193	46874	44169	44730		45911	40989	42089
1999	42264	44064	45208	47339	46747	47501	43696	44809	45125	45264	42840	41425	44690
2000	41527	44126	45064	46479	45212	46153	43262	44026	42993	41657	38182	37167	42987
2001	36813	40005	41007	42146	32146	30325	28293	28826	27203	27006	24770	23078	31802
2002	23817	25600	25820	30592	29873	28861	27320	28660	29098	29489	26879	25876	27657
2003	26387	27873	27429	29727	29052	29022	26640	27354	29095	28856	26992	25906	27861
2004	26204	27514	27541	27441	26018	26016	25278	26612	27857	25785	24690	23965	26243
2005	23949	25717	26077	27432	26627	25761	24465	27200	28137		24544	24558
2006	24926	26229	27046	27678	27328	27176	24990	27512	27671	27025	25757	24315	26471
2007	25408	26446	26883	27486	26777	26345	24937	26769	26384	26519	25063	23033	26004
2008	23123	25832	24915	26807	26369	24744	23779	24895	25542	25697	23672	23027	24867
2009	22695	24712	24060	25828	24768	24682	24189	24623	25341

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