Year Dollars 2004-01-01 39582635 2007-01-01 2335430 2010-01-01 6727196 2011-01-01 3005919 2012-01-01 1464897 2013-01-01 6665093 2014-01-01 2308233 2015-01-01 3579000 2016-01-01 325433