Year Dollars 1992-01-01 10761568 1997-01-01 64244749 2002-01-01 136202607 2003-01-01 115849730 2004-01-01 149471596 2005-01-01 104626804 2006-01-01 139631765 2007-01-01 273148845 2008-01-01 359110803 2009-01-01 299467318 2010-01-01 323382836 2011-01-01 341751202 2012-01-01 366692445 2013-01-01 359802996 2014-01-01 342689035 2015-01-01 424646137 2016-01-01 422471925