Year Dollars 1992-01-01 50883686 1997-01-01 63747700 2002-01-01 46373178 2003-01-01 35471380 2004-01-01 56719065 2005-01-01 61673910 2006-01-01 67988060 2007-01-01 82008859 2008-01-01 72205325 2009-01-01 60531429 2010-01-01 100197472 2011-01-01 100641634 2012-01-01 120985566 2013-01-01 142249569 2014-01-01 108693693 2015-01-01 130717215 2016-01-01 157650263