Year Dollars 1997-01-01 127900 2007-01-01 27300 2008-01-01 229848 2010-01-01 121796 2011-01-01 1313313 2012-01-01 3016169 2013-01-01 597152 2014-01-01 5978751 2015-01-01 4309314 2016-01-01 3012464