Year Dollars 1992-01-01 133117 1997-01-01 121619 2002-01-01 169160 2003-01-01 528827 2004-01-01 1641025 2005-01-01 173337 2006-01-01 738894 2007-01-01 602180 2008-01-01 680029 2009-01-01 688454 2010-01-01 367558 2011-01-01 620532 2012-01-01 953726 2013-01-01 1640989 2014-01-01 777046 2015-01-01 422772 2016-01-01 639560