Year Dollars 1992-01-01 58658029 1997-01-01 79043053 2002-01-01 186732544 2003-01-01 149930891 2004-01-01 164542587 2005-01-01 147597253 2006-01-01 162339945 2007-01-01 167777755 2008-01-01 209769892 2009-01-01 156628812 2010-01-01 151066796 2011-01-01 235488144 2012-01-01 261968922 2013-01-01 216388215 2014-01-01 237476855 2015-01-01 219083837 2016-01-01 230887906