Year Dollars 2007-01-01 2612905 2008-01-01 4089048 2009-01-01 671174 2010-01-01 1470158 2011-01-01 2453838 2012-01-01 4254091 2014-01-01 8169787 2015-01-01 15016339 2016-01-01 13753412