Year Dollars 1992-01-01 10277180 1997-01-01 10860451 2002-01-01 32925535 2003-01-01 14636483 2004-01-01 35027089 2005-01-01 8601449 2006-01-01 21350847 2007-01-01 13217137 2008-01-01 16752503 2009-01-01 26894858 2010-01-01 15855295 2011-01-01 23105329 2012-01-01 18157868 2013-01-01 13350021 2014-01-01 13482375 2015-01-01 177365300 2016-01-01 170724290