Year Dollars 1992-01-01 1828630 1997-01-01 24726874 2002-01-01 3752720 2003-01-01 4682836 2004-01-01 6349133 2005-01-01 6552160 2006-01-01 7769773 2007-01-01 5172330 2008-01-01 8723141 2009-01-01 3755843 2010-01-01 6220635 2011-01-01 4287707 2012-01-01 3833811 2013-01-01 6332655 2014-01-01 8284197 2015-01-01 8256272 2016-01-01 5057311