Year Dollars 2002-01-01 54559 2007-01-01 249392 2008-01-01 340262 2009-01-01 330685 2010-01-01 472603 2011-01-01 304771 2012-01-01 472082 2013-01-01 321075 2014-01-01 157827 2015-01-01 325556 2016-01-01 16217