Year Dollars 1992-01-01 1048368339 1997-01-01 1465599929 2002-01-01 445227351 2003-01-01 471891649 2004-01-01 371465861 2005-01-01 414471837 2006-01-01 337429808 2007-01-01 389584169 2008-01-01 666113305 2009-01-01 427973375 2010-01-01 472581048 2011-01-01 401627471 2012-01-01 378518572 2013-01-01 425000806 2014-01-01 521733580 2015-01-01 553680890 2016-01-01 565686443