YEAR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual 24-hr Avg.
1990	6207	6689	7215	7318	7387	7350	7729	7800	7444	7272	7054	6366	7155
1991	6382	2535
1992		7368	7678	7834	7608	7597	8055	7757	7657	7504	7279	6551
1993	6507	7614	7817	7974	8546	8691	9281	9048	8580	8574	8219	8121	8252
1994	7846	8502	9143	9307	9360	9352	9558	9601	9206	9137	8725	8308	9006
1995	8239	8960	9169	9216	9692	9664	9864	9659	9220	9277	8853	8517	9194
1996	8210	9021	9405	9615	9627	9597	9652	10554	10996	9868	9415	8867	9569
1997	8848	9644	10075	10371	10743	10727	10407	9869	10177	10628	10242	9935	10139
1998	9682	10573	11066	11595	11838	11546	11723	11625	11823	11648	10826	11323	11272
1999	10869	11433	12160	12008	12298	13095	12901	12626	12310	12996	12032	11326	12171
2000	11249	12062	12671	12605	12874	12914	12768	12700	12664	12526	12055	11877	12414
2001	11106	12105	12881	13200	13055	12684	12660	12610	12070	12386	11759	11258	12315
2002	11172	12079	12392	13202	13281	12778	12880	12963	12791	12795	11873	11487	12474
2003	10911	11163	11327	12119	13014	12098	11730	11822	11713	11826	11077	11008	11651
2004	10335	11256	12227	12412	12178	11915	12043	11969	11647	11606	11267	11148	11667
2005	10659	12038	12658	12473	12747	13376	13118	13184	12259	12105	11936	11588	12345
2006	11758	12653	13717	13960	14400	14097	13803	13614	13340	13368	13083	11500	13274
2007	10490	10950	11576	11123	11033	10745	10444	10687	10365	9316	9492	9000	10435
2008	8843	9628	10222	9853	9947	9420	10002	10196	10407	10524	8753	7404	9600
2009	7390	7659	7861	8207	10532	9946	10559	10265	10396

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