Year Dollars 1992-01-01 189225 1997-01-01 1112998 2002-01-01 3443490 2003-01-01 2023868 2004-01-01 3498995 2005-01-01 7255713 2006-01-01 5596390 2007-01-01 11650347 2008-01-01 12386813 2009-01-01 5792190 2010-01-01 9989902 2011-01-01 15034536 2012-01-01 18852265 2013-01-01 36024061 2014-01-01 25034578 2015-01-01 23423632 2016-01-01 31439411