Year Dollars 1997-01-01 47015978 2002-01-01 142193188 2003-01-01 188246420 2005-01-01 125906206 2006-01-01 165238029 2007-01-01 169867557 2008-01-01 238506971 2009-01-01 105590154 2010-01-01 194220086 2011-01-01 217795561 2012-01-01 235446181 2013-01-01 153987726 2014-01-01 81828342 2015-01-01 60136059 2016-01-01 64886289