Year Dollars 1992-01-01 6012488 1997-01-01 11858688 2002-01-01 10396881 2003-01-01 13817120 2004-01-01 15129970 2005-01-01 22810735 2006-01-01 44668354 2007-01-01 63632859 2008-01-01 69738416 2009-01-01 57221657 2010-01-01 48028920 2011-01-01 48720891 2012-01-01 45045839 2013-01-01 51573736 2014-01-01 58663770 2015-01-01 69227274 2016-01-01 84665021