Year Dollars 1992-01-01 7684567 1997-01-01 11459863 2002-01-01 24530791 2003-01-01 14556670 2004-01-01 31353470 2005-01-01 31750970 2006-01-01 21597501 2007-01-01 33819240 2008-01-01 45439726 2009-01-01 25909746 2010-01-01 30537536 2011-01-01 38335592 2012-01-01 26499675 2013-01-01 30407920 2014-01-01 24742107 2015-01-01 24441051 2016-01-01 27764143