Year Dollars 1997-01-01 45685 2006-01-01 48229 2007-01-01 70239 2008-01-01 82068 2009-01-01 354460 2010-01-01 136320 2011-01-01 191956 2012-01-01 22464 2013-01-01 354548 2014-01-01 174287 2015-01-01 134940 2016-01-01 141327