Year Dollars 1997-01-01 82103 2002-01-01 110750 2003-01-01 78943 2004-01-01 71600 2006-01-01 80830 2007-01-01 74494 2008-01-01 96607 2009-01-01 180821 2010-01-01 173865 2011-01-01 369553 2012-01-01 720415 2013-01-01 622157 2014-01-01 891754 2015-01-01 1597694 2016-01-01 698624