Year Dollars 1997-01-01 1386134 2002-01-01 1609773 2003-01-01 1361724 2004-01-01 2225483 2005-01-01 2072266 2006-01-01 2953448 2007-01-01 5286100 2008-01-01 7625303 2009-01-01 3995235