Year Dollars 1992-01-01 155145746 1997-01-01 144478990 2002-01-01 83155939 2003-01-01 67686378 2004-01-01 82438287 2005-01-01 92112084 2006-01-01 83428687 2007-01-01 100944014 2008-01-01 157587394 2009-01-01 79804738 2010-01-01 132069350 2011-01-01 175177353 2012-01-01 170973594 2013-01-01 147572419 2014-01-01 138043707 2015-01-01 183800813 2016-01-01 167854798