Year Dollars 2002-01-01 29807 2006-01-01 335944 2009-01-01 380123 2010-01-01 97164 2011-01-01 163461 2012-01-01 550908 2013-01-01 549351 2014-01-01 184835 2015-01-01 236521 2016-01-01 713518