Year Dollars 1992-01-01 56908666 1997-01-01 157706279 2002-01-01 217762185 2003-01-01 201699114 2004-01-01 351615932 2005-01-01 279594162 2006-01-01 358391014 2007-01-01 355979712 2008-01-01 353828606 2009-01-01 445764186 2010-01-01 642303357 2011-01-01 612258765 2012-01-01 663855270 2013-01-01 991749520 2014-01-01 969696409 2015-01-01 964816844 2016-01-01 1068754521