YEAR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual 24-hr Avg.
1996		14881	16286	17081	18873	19854		21123		17652	17824	15858
1997	14690	15248	17858		19788	20769	21190	21863	19418	18771	17704	16409
1998	14663	16365	18312	19428		22292	21679	22475	20437	19703	18172	16604
1999	15894	16241	19319	19404	19993	22917	22938	23706	21318	20221	18521	17047
2000	15491	17694	19812	19956	21114	22876	23610	25022	21291	20548	19047	16734
2001	15796	17533	20202	20134	20781	23011	23272	23848	21392	20495	19373	16706
2002	15959	18571	20225	20226	21971	23628	23646	24251	20416	20784	20230	17725
2003	16858	17871	19635	19612	21200	23479	23674	24302	21073	20917	19124	17666
2004	15803	17484	20771	20571	21450			22345	20978	20345	19222	18425
2005	16199	18320	20574	20420	20909	23135	23698	23232	21151	20368	19361	17700
2006	16721
2007							24674	25684	22601	22230	21266	18268
2008	16152	17134	21070	19766	20931	21731	21834	22537	19965	19648	18788	16084
2009	15580	17460	19490	19996	21317	22240	23170	22852	21051	20097	19194	16880
2010	15936	17662	19865	20200	21055	22590	23627	23602	21653	20765	18360	16928
2011	16206	17475	19369	19412	20689	22298	23031	22838	21251	20340	18472	18094
2012	15977	17776	19495	19825	21156	22917	23610	24263	22004	21555	20265	17599
2013		18383	21075	20769

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