Year Dollars 1997-01-01 672582 2002-01-01 142568 2003-01-01 244986 2004-01-01 174628 2005-01-01 238296 2007-01-01 185407 2008-01-01 115708 2009-01-01 197296 2010-01-01 485795 2011-01-01 274711 2012-01-01 432708 2013-01-01 424923 2014-01-01 451973 2015-01-01 448940 2016-01-01 278840