Year Dollars 1992-01-01 24058574 1997-01-01 5465382 2002-01-01 22604314 2003-01-01 17391071 2004-01-01 17404339 2005-01-01 22405937 2006-01-01 14834633 2007-01-01 26191509 2008-01-01 29330361 2009-01-01 30111881 2010-01-01 28460352 2011-01-01 28825344 2012-01-01 39619856 2013-01-01 27213333 2014-01-01 28138410 2015-01-01 27005573 2016-01-01 34711077