Year Dollars 1992-01-01 492031 1997-01-01 1310914 2002-01-01 8221408 2003-01-01 1315227 2004-01-01 1385855 2005-01-01 2590315 2006-01-01 3724784 2007-01-01 3928621 2008-01-01 4848981 2009-01-01 5014193 2010-01-01 6682662 2011-01-01 4849946 2012-01-01 6382584 2013-01-01 8610238 2014-01-01 7126893 2015-01-01 5337026 2016-01-01 7351665