Year Dollars 2002-01-01 165862 2004-01-01 127874 2006-01-01 328198 2007-01-01 142345 2008-01-01 296819 2009-01-01 2832012 2010-01-01 1166098 2011-01-01 825621 2012-01-01 1948059 2013-01-01 3643511 2014-01-01 6058075 2015-01-01 2099098 2016-01-01 1963383