YEAR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual 24-hr Avg.
1990	11949	12788	14066	13645	13434	12969	12619	12845	18697	19598	13525	11159	13942
1991	11677	12989	12959	13974	13732	13183	13283	13391	14245	14396	13084	12571	13289
1992	12925	14098	14292	14945	14425	13963	13668	13535	14419	14515	13283	12941	13952
1993	12452	13264	14649	14565	14756	14580	14011	14367	15104	14845	13896	13213	14145
1994	13599	13969	15428	15474	14540	13249	12334	14684	15526	15247	14336	13289	14305
1995	13801	15089	14864	15612	15564	16894	14579	15886	15716	15776	14792	14226	15233
1996	13698	14850	15179	15719	15070	14238	12975	14016	15689	15390	14612	13891	14611
1997	13659	14740	14166	15229	17454				15435	15106	14494	13569
1998	13779	14590	14607	14885	14442	13335	15536	10928	14156	15317	14448	13591	14135
1999	13726	14649	14812	14996	13309	13750	14160
2000
2001
2002								15333	15130	15715	14219	13417
2003	13761	14412	14122	15540	15957	15252	14995	13841	13737	14533	14173	12351	14390
2004	12928	13804	14417	15356	14149	14999	14160	15413	16048	12691	13323	12667	14163
2005	12568	13795	15151		13191	13571	12800	13662	14505	13521	13047	12095
2006	12487	13447	13540	14263	14283	13972	13469	15176	15059	13866	13141	12279	13749
2007	12789	13613	13878	14500	14363	13510	13140	14092	13900	14409	13370	12246	13651
2008	12623	13465	13247	14621	14190	13311	12983	13073	13944	14120	12869	12344	13399
2009	12516	13159	12965	14648	14311	13657	13198	13488	14118	13971	12983	12308	13444
2010	12341	13367	13563	14356	13728	13547	13021	13460	14179	13930	12688	12452	13386
2011	12676	13153	12974	14035	13588	13243	12662	13419	13738	13693	12391	11839	13118
2012	12262	12811	12651	13933	13159	12900	12409	12650	13437	13922	12472

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