Year Dollars 1997-01-01 4513028 2002-01-01 985001 2003-01-01 5666676 2004-01-01 3246665 2005-01-01 2112724 2006-01-01 3015964 2007-01-01 3751743 2008-01-01 2730736 2009-01-01 1581777 2010-01-01 1607052 2011-01-01 1575870 2012-01-01 3017947 2013-01-01 3139876 2014-01-01 3639618 2015-01-01 3463308 2016-01-01 7218555