Year Dollars 1992-01-01 5740044 1997-01-01 30458797 2002-01-01 28379872 2003-01-01 23723974 2004-01-01 37295725 2005-01-01 48139033 2006-01-01 102981561 2007-01-01 61497677 2008-01-01 101789874 2009-01-01 125754691 2010-01-01 113688128 2011-01-01 148173242 2012-01-01 159551138 2013-01-01 124989702 2014-01-01 147031705 2015-01-01 87687666 2016-01-01 122169525