Year Dollars 1992-01-01 56543615 1997-01-01 99039875 2002-01-01 156637046 2003-01-01 195267616 2004-01-01 228904190 2005-01-01 252069087 2006-01-01 363181121 2007-01-01 429536016 2008-01-01 430021857 2009-01-01 380079035 2010-01-01 475392730 2011-01-01 504334708 2012-01-01 596807313 2013-01-01 424089070 2014-01-01 354745671 2015-01-01 393108571 2016-01-01 532416811