Year Dollars 1992-01-01 689447 1997-01-01 4299651 2002-01-01 996069 2003-01-01 1441256 2004-01-01 1887574 2005-01-01 2397144 2006-01-01 2609740 2007-01-01 5671469 2008-01-01 4142529 2009-01-01 2404788 2010-01-01 4683354 2011-01-01 1854774 2012-01-01 2081516 2013-01-01 1486834 2014-01-01 1476037 2015-01-01 1065452 2016-01-01 644503