Year Dollars 1992-01-01 8176951 1997-01-01 2469123 2002-01-01 4096565 2003-01-01 2203304 2008-01-01 321698 2009-01-01 151144 2011-01-01 1584348 2013-01-01 1231935 2014-01-01 4667546 2015-01-01 641759 2016-01-01 1093909