Year Dollars 1997-01-01 2227083 2002-01-01 137946 2003-01-01 319920 2004-01-01 463467 2005-01-01 744087 2006-01-01 581095 2007-01-01 1048992 2008-01-01 1759909 2009-01-01 996595 2010-01-01 1651121 2011-01-01 1548071 2012-01-01 1889744 2013-01-01 1448564 2014-01-01 1251206 2015-01-01 1777745 2016-01-01 1137003