Year Dollars 1992-01-01 61596042 1997-01-01 77369688 2002-01-01 63445797 2003-01-01 70156460 2004-01-01 130892087 2005-01-01 113601703 2006-01-01 142110352 2007-01-01 220171107 2008-01-01 334612135 2009-01-01 325019088 2010-01-01 290899597 2011-01-01 525607618 2012-01-01 517163189 2013-01-01 383110834 2014-01-01 317144986 2015-01-01 253659220 2016-01-01 194380269