Year Dollars 1992-01-01 98317638 1997-01-01 151633741 2002-01-01 181709422 2003-01-01 192935790 2004-01-01 233275388 2005-01-01 234230380 2006-01-01 220465105 2007-01-01 257887028 2008-01-01 309297289 2009-01-01 243921364 2010-01-01 337262229 2011-01-01 356818070 2012-01-01 374587718 2013-01-01 289490344 2014-01-01 381999013 2015-01-01 288385286 2016-01-01 242471281