Year Dollars 1992-01-01 52313 1997-01-01 397015 2002-01-01 492099 2003-01-01 1230863 2004-01-01 3065055 2005-01-01 958480 2006-01-01 1941106 2007-01-01 1352862 2008-01-01 2230242 2009-01-01 2329039 2010-01-01 6379815 2011-01-01 18335673 2012-01-01 4455100 2013-01-01 4628387 2014-01-01 5964919 2015-01-01 5790167 2016-01-01 4764155