Year Dollars 1992-01-01 373308285 1997-01-01 501897818 2002-01-01 425590657 2003-01-01 355742534 2004-01-01 185975574 2005-01-01 136434324 2006-01-01 223826523 2007-01-01 269226160 2008-01-01 397773368 2009-01-01 413681892 2010-01-01 435852237 2011-01-01 531433715 2012-01-01 467386599 2013-01-01 565027595 2014-01-01 732993976 2015-01-01 793052279 2016-01-01 694398283