Year Dollars 1992-01-01 27476666 1997-01-01 6629507 2002-01-01 7314228 2003-01-01 12077242 2004-01-01 14168050 2005-01-01 4294508 2006-01-01 12170947 2007-01-01 18517919 2008-01-01 24537414 2009-01-01 38406147 2010-01-01 10251636 2011-01-01 23612543 2012-01-01 16796722 2013-01-01 14494556 2014-01-01 11447743 2015-01-01 15070721 2016-01-01 12299145