Year Dollars 1997-01-01 1869439 2002-01-01 595116 2003-01-01 1411022 2004-01-01 10735648 2005-01-01 8595429 2006-01-01 2249494 2007-01-01 3618089 2008-01-01 10313471 2009-01-01 4583120 2010-01-01 4401090 2011-01-01 7412196 2012-01-01 8960163 2013-01-01 13239006 2014-01-01 10132502 2015-01-01 10750045 2016-01-01 25088462