Year Dollars 2002-01-01 7932755 2008-01-01 3798594 2009-01-01 9536966 2010-01-01 51631305 2011-01-01 38287655 2012-01-01 20037320 2013-01-01 15282348 2014-01-01 13012482 2015-01-01 15667671 2016-01-01 25750824