Year Dollars 1992-01-01 108636767 1997-01-01 185650556 2002-01-01 221591534 2003-01-01 227037736 2004-01-01 182503996 2005-01-01 151747496 2006-01-01 175182567 2007-01-01 123747825 2008-01-01 119446066 2009-01-01 87112102 2010-01-01 99621620 2011-01-01 100099142 2012-01-01 90544845 2013-01-01 84805027 2014-01-01 81913625 2015-01-01 70172193 2016-01-01 78371602