Year Dollars 2002-01-01 117474 2005-01-01 35097 2006-01-01 179975 2008-01-01 141050 2011-01-01 1483167 2012-01-01 1143633 2013-01-01 318960 2014-01-01 536258 2015-01-01 122546 2016-01-01 498934