Year Dollars 2002-01-01 15817 2005-01-01 29361 2006-01-01 19677 2008-01-01 44480 2009-01-01 95522 2010-01-01 69411 2011-01-01 140113 2012-01-01 123431 2013-01-01 217560 2014-01-01 250074 2015-01-01 30059 2016-01-01 63186