Year Dollars 1992-01-01 4898753 1997-01-01 5017057 2002-01-01 4393498 2003-01-01 6766599 2004-01-01 22679985 2005-01-01 19064237 2006-01-01 24126246 2007-01-01 36772786 2008-01-01 21853141 2009-01-01 29882309 2010-01-01 28777091 2012-01-01 57498130 2013-01-01 33060727 2014-01-01 25622669 2015-01-01 14537642 2016-01-01 13242760