Year Dollars 1992-01-01 2452196 1997-01-01 3786890 2002-01-01 27711052 2003-01-01 23408676 2004-01-01 17817541 2005-01-01 20128592 2006-01-01 20130510 2007-01-01 36118081 2008-01-01 47589452 2009-01-01 41129598 2010-01-01 47570605 2011-01-01 24338285 2012-01-01 21960049 2013-01-01 25249356 2014-01-01 25943848 2015-01-01 22540686 2016-01-01 27038676