Year Dollars 1992-01-01 2147760 1997-01-01 1647688 2002-01-01 1781270 2003-01-01 4050014 2004-01-01 3788186 2005-01-01 3412935 2006-01-01 2548330 2007-01-01 2974592 2008-01-01 3267711 2009-01-01 3500821 2010-01-01 3541407 2011-01-01 4048230 2012-01-01 4676879 2013-01-01 6362962 2014-01-01 16925634 2015-01-01 10524859 2016-01-01 7775282