Year Dollars 1997-01-01 2957512 2002-01-01 2404361 2003-01-01 2487806 2004-01-01 2370978 2005-01-01 1412977 2006-01-01 2198893 2007-01-01 20740967 2008-01-01 26865171 2009-01-01 6333961 2010-01-01 8905605 2011-01-01 14385119 2012-01-01 7957680 2013-01-01 8572622 2014-01-01 13390951 2015-01-01 17614856 2016-01-01 6413930