Year Dollars 2002-01-01 56399 2004-01-01 22543 2009-01-01 22909 2010-01-01 31998 2011-01-01 226799 2012-01-01 778021 2013-01-01 217218 2014-01-01 995493 2015-01-01 419949 2016-01-01 1386707