Year Dollars 1992-01-01 818401 1997-01-01 780447 2002-01-01 5867743 2003-01-01 2223334 2004-01-01 5150355 2005-01-01 16294211 2006-01-01 16804028 2007-01-01 22773616 2008-01-01 23842086 2009-01-01 15792405 2010-01-01 10383111 2011-01-01 10197849 2012-01-01 11597792 2013-01-01 16466231 2014-01-01 16895340 2015-01-01 24708433 2016-01-01 20675698