Year Dollars 1992-01-01 17040736 1997-01-01 13875701 2002-01-01 8825776 2003-01-01 12341375 2004-01-01 12746387 2005-01-01 16310682 2006-01-01 18965101 2007-01-01 16453659 2008-01-01 18151555 2011-01-01 46961741 2012-01-01 29718614 2013-01-01 44527147 2014-01-01 79746676 2015-01-01 6659958 2016-01-01 6312277