YEAR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual 24-hr Avg.
1990	13694	14313	15202	15722	16182	16629	15352	15884	15359	15447	14732	13185	15144
1991	13466	15091	16600	18484	17948	17164	16340	16294	15841	15549	14482	14818	16009
1992	15129	15197	15708	16512	17163	16676	15966	15680	15714	15496	14411	14699	15740
1993	12797	14386	15052	16049	16428	16504	15234	15433	15703	15613	15257	14919	15282
1994	14213	15049	16248	17100	17421	17337	16143	16440	16236	16147	15779	14064	16016
1995											14938	15373
1996	14476	15304	15994	16713	16803	16738	15903	16529	15831	15451	15572	15114	15869
1997	14301	15668	16043	16648	17027	16735	16044	15975	15856	15487	14811	14753	15779
1998	14001	15199	16189	16390	16680	16610	16244	16243	16229	16003	15392	15185	15864
1999	14661	15162	16297	16794	17066	17169	16457	16153	16211	16305	15538	15405	16102
2000	15157	15974	16766	17658	17447	17100	16331	16497	16406	16215	15458	15212	16352
2001	14157	15697	16238	17046	17488	16798	16433	16763		16511	15502	14970
2002	14918	16010	16339	17410	17702	17414	16708			17209	16399	15995
2003	15927	17504	16939	17765	14887	15616	16197	16307	16443	16586	15421	15543	16261
2004	14103	15995	16824	17474	17346	17230	16801	16785	16770	16521	15603	15949	16450
2005	13967	16586	17095	17448	17661	16490	17258	17698	16796	16832	16533	16115	16707
2006	15882	16608	17677	18423	18960	19133	18068	18343	18211	17809	17287	16466	17739
2007	16239	17125	18133	18625	19324	18019	16852	17559	16804	17583	16125	15562	17329
2008	14453	16403	16716	17604	17457	16347	15596	15456	15834	16042	15796	15836	16128
2009	15662	17077	16864	17837	17042	16306	16054	16119	16160

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