Year Dollars 1992-01-01 9378725 1997-01-01 26033605 2002-01-01 15571716 2003-01-01 19103213 2004-01-01 42214404 2005-01-01 27862593 2006-01-01 24791549 2007-01-01 41776686 2008-01-01 87673391 2009-01-01 29378726 2010-01-01 56615279 2011-01-01 90112753 2012-01-01 71339666 2013-01-01 75345860 2014-01-01 117337196 2015-01-01 174017120 2016-01-01 177271918