Year Dollars 1992-01-01 30652287 1997-01-01 35665706 2002-01-01 28249162 2003-01-01 29907678 2004-01-01 46151201 2005-01-01 56581682 2006-01-01 62095061 2007-01-01 60261893 2008-01-01 61364721 2009-01-01 50442209 2010-01-01 54305786 2011-01-01 70775444 2012-01-01 82194724 2013-01-01 80003148 2014-01-01 71456282 2015-01-01 50099786 2016-01-01 46010839