YEAR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual 24-hr Avg.
2006							20242	19595	18878	16863	17779	17992
2007	16646	18206	20419	20588	20602	21849	22635	22320	21112	19339	20188	17422	20111
2008	16862	17154	19410

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