Year Dollars 1992-01-01 3016884 1997-01-01 14116771 2002-01-01 6413822 2003-01-01 6293726 2004-01-01 6817894 2005-01-01 8397816 2006-01-01 8663207 2007-01-01 8492458 2008-01-01 18976247 2009-01-01 16604495 2010-01-01 19038733 2011-01-01 13820492 2012-01-01 14088885 2013-01-01 14389733 2014-01-01 11996516 2015-01-01 8604204 2016-01-01 11248679