Year Dollars 1992-01-01 3828482 1997-01-01 2258168 2002-01-01 18144049 2003-01-01 16266349 2004-01-01 31393357 2005-01-01 25092394 2006-01-01 21940315 2007-01-01 24063736 2008-01-01 21721788 2009-01-01 12102194 2010-01-01 13167291 2011-01-01 10075369 2012-01-01 15084887 2013-01-01 3952818 2014-01-01 2402525 2015-01-01 2863169 2016-01-01 2955794