Year Dollars 1992-01-01 370290013 1997-01-01 418260885 2002-01-01 395320913 2003-01-01 563514109 2004-01-01 612037887 2005-01-01 568823194 2006-01-01 763977922 2007-01-01 617464110 2008-01-01 588006149 2009-01-01 390230220 2010-01-01 447871174 2011-01-01 381703999 2012-01-01 429917811 2013-01-01 505118419 2014-01-01 309143471 2015-01-01 328771224 2016-01-01 361929339