Year Dollars 1992-01-01 4774567 1997-01-01 2631375 2002-01-01 6684898 2003-01-01 9304421 2004-01-01 11974219 2005-01-01 11053078 2006-01-01 20888964 2007-01-01 24011598 2008-01-01 26983524 2009-01-01 37060051 2010-01-01 27249788 2011-01-01 33090571 2012-01-01 47467098 2013-01-01 101884840 2014-01-01 71778591 2015-01-01 34786251 2016-01-01 31368201