Year Dollars 1997-01-01 33331 2006-01-01 52850 2007-01-01 82194 2008-01-01 518036 2009-01-01 64295 2010-01-01 70435 2011-01-01 33184 2012-01-01 84178 2013-01-01 151911 2014-01-01 116049 2015-01-01 180354 2016-01-01 359579