Year Dollars 1992-01-01 8545450 1997-01-01 1619785 2002-01-01 15817407 2003-01-01 21669008 2004-01-01 23002078 2005-01-01 18944154 2006-01-01 27854298 2007-01-01 30278734 2008-01-01 42527099 2009-01-01 20124473 2010-01-01 21736262 2011-01-01 19592748 2012-01-01 24158887 2013-01-01 38203599 2014-01-01 28869044 2015-01-01 23652224 2016-01-01 17550885