Year Dollars 1992-01-01 48270969 1997-01-01 194773701 2002-01-01 502610597 2003-01-01 900993764 2004-01-01 613235947 2005-01-01 606855279 2006-01-01 511064611 2007-01-01 517150212 2008-01-01 369605125 2009-01-01 337778000 2010-01-01 419333455 2011-01-01 379628541 2012-01-01 321302881 2013-01-01 294561917 2014-01-01 255068658 2015-01-01 246697793 2016-01-01 254596913