Year Dollars 1992-01-01 2157614 1997-01-01 3090900 2003-01-01 13171460 2004-01-01 4774120 2006-01-01 21586323 2008-01-01 7546150 2009-01-01 3070197 2010-01-01 5457261 2011-01-01 6405789 2012-01-01 4115747 2013-01-01 5167143 2014-01-01 5946572 2015-01-01 8311047 2016-01-01 5472171