Year Dollars 1992-01-01 8337733 1997-01-01 7630416 2002-01-01 7621310 2003-01-01 9308862 2004-01-01 12474051 2005-01-01 14589178 2006-01-01 10441419 2007-01-01 17736821 2008-01-01 9422275 2009-01-01 6131738 2010-01-01 13295921 2011-01-01 3808791 2012-01-01 4323844 2013-01-01 5404592 2014-01-01 7512006 2015-01-01 3756486 2016-01-01 2502417