Year Dollars 1997-01-01 79918 2002-01-01 58671 2004-01-01 27180 2005-01-01 18695 2008-01-01 20292 2009-01-01 127674 2010-01-01 54322 2011-01-01 65499 2012-01-01 147539 2013-01-01 259116 2014-01-01 201491 2015-01-01 93882 2016-01-01 331835