Year Dollars 1992-01-01 36724670 1997-01-01 53279282 2002-01-01 41409142 2003-01-01 52488378 2004-01-01 61220326 2005-01-01 73044548 2006-01-01 115203959 2007-01-01 169966753 2008-01-01 159910175 2009-01-01 110428441 2010-01-01 156129370 2011-01-01 133870675 2012-01-01 111690092 2013-01-01 192225418 2014-01-01 182260024 2015-01-01 161618735 2016-01-01 163660403