YEAR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual 24-hr Avg.
2004					27600	22279	23654	23061	21294	20037	18879	19037
2005	15783	18232	18936	19676	20824	22332	23689	24212	22198	19703	19046	17056	20141
2006	17344	18272	19152	19744	21299	22338	22956	22914	21047	19897	18398	17836	20100
2007	16007	17668	18966
2008	10937	17785	17391	18091	19525	20388	21755	21697	19794	19001	17360	15093	18235
2009	14963	16263	16238	18455	19459	20238	21587	21453	19493

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