Year Dollars 1992-01-01 1155764 1997-01-01 1048770 2002-01-01 1829631 2003-01-01 8280406 2004-01-01 7212403 2005-01-01 11251322 2006-01-01 16916461 2007-01-01 19114530 2008-01-01 25731743 2009-01-01 4821867 2010-01-01 6452207 2011-01-01 4827406 2012-01-01 20186939 2013-01-01 23991020 2014-01-01 18134188 2015-01-01 38384630 2016-01-01 37499258