Year Dollars 1997-01-01 56764 2002-01-01 316342 2003-01-01 295493 2004-01-01 674594 2005-01-01 1603263 2006-01-01 1228945 2007-01-01 2008414 2008-01-01 2386648 2009-01-01 1148649 2010-01-01 1410910 2011-01-01 2211195 2012-01-01 5995539 2013-01-01 5309290