YEAR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual 24-hr Avg.
2006								5946	5924	5927	5440	4982
2007	4788	4911	5531	5653	5784	5687	5406	5809	5755	5576	5031	4594	5377
2008	4411	4879	5218	5431	5557	5256	5164	5342	5282	5328	4722
2009	4377	4594	4718	4889	4939	5257	5156	5349	5412