Year Dollars 1997-01-01 1672040 2002-01-01 1952941 2003-01-01 856202 2004-01-01 1109685 2005-01-01 9292790 2006-01-01 9220029 2007-01-01 14195731 2008-01-01 15067106 2009-01-01 6129951 2010-01-01 5800446 2011-01-01 2792304 2012-01-01 8170444 2013-01-01 7686691 2014-01-01 20987839 2015-01-01 7377998 2016-01-01 13974749