Year Dollars 1992-01-01 9281649 1997-01-01 63221575 2002-01-01 15241089 2003-01-01 17937389 2004-01-01 21398530 2005-01-01 23866951 2006-01-01 28852634 2007-01-01 42739650 2008-01-01 87530488 2009-01-01 44792120 2010-01-01 45195874 2011-01-01 31244529 2012-01-01 66413097 2013-01-01 81011358 2014-01-01 57647132 2015-01-01 65193226 2016-01-01 55000423