Year Dollars 1992-01-01 3098156 1997-01-01 15388193 2002-01-01 43683283 2003-01-01 30758904 2004-01-01 35403341 2005-01-01 34054394 2006-01-01 34744079 2007-01-01 24483256 2008-01-01 32455872 2009-01-01 25091443 2010-01-01 34478120 2011-01-01 48584816 2012-01-01 65307219 2013-01-01 50412789 2014-01-01 30348504 2015-01-01 36765303 2016-01-01 39241567