Year Dollars 1997-01-01 12250064 2002-01-01 17202223 2003-01-01 19923065 2004-01-01 22116280 2005-01-01 33072173 2006-01-01 32707967 2007-01-01 49719914 2008-01-01 59830673 2009-01-01 39253685 2010-01-01 44431835 2011-01-01 57402389 2012-01-01 47452797 2013-01-01 69215831 2014-01-01 65668342 2015-01-01 61685110 2016-01-01 43215379