Year Dollars 1992-01-01 16102183 1997-01-01 29405831 2002-01-01 35234229 2003-01-01 24779967 2004-01-01 19057632 2005-01-01 9848876 2006-01-01 9708764 2007-01-01 11721370 2008-01-01 9899757 2009-01-01 10275094 2010-01-01 16363324 2011-01-01 28449232 2012-01-01 29545517 2013-01-01 29947621 2014-01-01 39068563 2015-01-01 28365786 2016-01-01 36730985