Year Dollars 1992-01-01 21385435 1997-01-01 16645317 2002-01-01 14105914 2003-01-01 38635416 2004-01-01 44557334 2005-01-01 43606631 2006-01-01 73296916 2007-01-01 49995855 2008-01-01 76706637 2009-01-01 43893479 2010-01-01 52577979 2011-01-01 44811035 2012-01-01 34802736 2013-01-01 56646389 2014-01-01 74920500 2015-01-01 106289483 2016-01-01 69169944