Year Dollars 1992-01-01 9838456 1997-01-01 8838105 2002-01-01 8707661 2003-01-01 8712906 2004-01-01 8376152 2005-01-01 8609221 2006-01-01 10933390 2007-01-01 20817661 2008-01-01 13181880 2009-01-01 13561650 2010-01-01 14436739 2011-01-01 12863389 2012-01-01 24836056 2013-01-01 10198397 2014-01-01 9303741 2015-01-01 8793242 2016-01-01 15811736