Year Dollars 1992-01-01 6694345 1997-01-01 10253604 2002-01-01 8349219 2003-01-01 8309723 2004-01-01 7193129 2005-01-01 8164149 2006-01-01 11842771 2007-01-01 16590082 2008-01-01 22203360 2009-01-01 34742980 2010-01-01 39824088 2011-01-01 21489479 2012-01-01 25549119 2013-01-01 23554121 2014-01-01 35712872 2015-01-01 40903218 2016-01-01 46584342