Year Dollars 1992-01-01 6648480 1997-01-01 1216063 2002-01-01 1460045 2003-01-01 1281656 2004-01-01 494200 2005-01-01 715966 2009-01-01 5158025 2010-01-01 1361765 2011-01-01 1347955 2012-01-01 2165638 2013-01-01 1524836 2014-01-01 2563051 2015-01-01 21244539 2016-01-01 15531956