Year Dollars 1992-01-01 194959 1997-01-01 1976529 2002-01-01 2501141 2003-01-01 729777 2004-01-01 5648879 2005-01-01 6099733 2006-01-01 4948484 2007-01-01 7123295 2008-01-01 7684699 2009-01-01 2854604 2010-01-01 3065215 2011-01-01 5483277 2012-01-01 4196938 2013-01-01 6318439 2014-01-01 8331289 2015-01-01 4873080 2016-01-01 2507688