Year Dollars 1992-01-01 3256353 1997-01-01 12790012 2002-01-01 10939404 2003-01-01 8943826 2004-01-01 2475272 2005-01-01 3112650 2006-01-01 4464390 2007-01-01 10412491 2008-01-01 5338708 2009-01-01 14549437 2010-01-01 13226405 2011-01-01 7527932 2012-01-01 8668410 2013-01-01 12169448 2014-01-01 20291804 2015-01-01 16941737 2016-01-01 11971561