Year Dollars 1992-01-01 46565063 1997-01-01 20498219 2002-01-01 21077016 2003-01-01 18516710 2004-01-01 25033356 2005-01-01 13605771 2006-01-01 24827089 2007-01-01 22475024 2008-01-01 20815903 2009-01-01 27688088 2010-01-01 43190378 2011-01-01 34450846 2012-01-01 65170849 2013-01-01 48439004 2014-01-01 57723133 2015-01-01 48576312 2016-01-01 46796636