Year Dollars 1992-01-01 3684009 1997-01-01 3782474 2002-01-01 10552412 2003-01-01 8484125 2004-01-01 6436480 2005-01-01 4439891 2006-01-01 5314793 2007-01-01 11992247 2008-01-01 18857375 2009-01-01 18117682 2010-01-01 11525293 2011-01-01 5518524 2012-01-01 5829998 2013-01-01 6573539 2014-01-01 8859023 2015-01-01 15377385 2016-01-01 11745115