Year Dollars 1992-01-01 23870660 1997-01-01 42772910 2002-01-01 59942956 2003-01-01 35060943 2004-01-01 29960479 2005-01-01 39361758 2006-01-01 49354854 2007-01-01 68224138 2008-01-01 55403478 2009-01-01 61802745 2010-01-01 75417493 2011-01-01 142724086 2012-01-01 170399350 2013-01-01 105324856 2014-01-01 90326140 2015-01-01 83111428 2016-01-01 68018780