Year Dollars 2002-01-01 1484338 2003-01-01 8363298 2004-01-01 11035933 2005-01-01 7334513 2006-01-01 8837972 2007-01-01 12791381 2008-01-01 16026785 2009-01-01 8278745 2010-01-01 17569024 2011-01-01 21238773 2012-01-01 16191892 2013-01-01 18425815 2014-01-01 15439150 2015-01-01 12878096 2016-01-01 10680721