Year Dollars 1992-01-01 1969486 1997-01-01 1810968 2002-01-01 2202412 2003-01-01 3027778 2004-01-01 3953561 2005-01-01 5782943 2006-01-01 6801465 2007-01-01 5992946 2008-01-01 9232510 2009-01-01 12614614 2010-01-01 5418461 2011-01-01 1900377 2012-01-01 4351456 2013-01-01 3754506 2014-01-01 6510794 2015-01-01 7029717 2016-01-01 12432029