Year Dollars 1992-01-01 170971452 1997-01-01 240573302 2002-01-01 244476798 2003-01-01 346583869 2004-01-01 219602346 2005-01-01 140569916 2006-01-01 192368366 2007-01-01 442067140 2008-01-01 257157449 2009-01-01 208101023 2010-01-01 231570066 2011-01-01 369838750 2012-01-01 249067704 2013-01-01 225684705 2014-01-01 304103103 2015-01-01 302961496 2016-01-01 330898624