Year Dollars 1997-01-01 3317963 2004-01-01 902452 2005-01-01 1186205 2006-01-01 9912137 2007-01-01 3746168 2008-01-01 1661248 2009-01-01 853488 2011-01-01 2038265 2012-01-01 876496 2015-01-01 1772660