Year Dollars 1992-01-01 17112412 1997-01-01 17033287 2002-01-01 30071562 2003-01-01 26594019 2004-01-01 17857641 2005-01-01 26666466 2006-01-01 13742155 2007-01-01 36245180 2008-01-01 38998429 2009-01-01 23421189 2010-01-01 19544066 2011-01-01 21190598 2012-01-01 25753377 2013-01-01 12388345 2014-01-01 9838904 2015-01-01 8109419 2016-01-01 10507649