Year Dollars 1992-01-01 13417888 1997-01-01 35811087 2002-01-01 25641765 2003-01-01 31027467 2004-01-01 49704788 2005-01-01 59025301 2006-01-01 51820017 2007-01-01 74429138 2008-01-01 68942519 2009-01-01 62954163 2010-01-01 57841490 2011-01-01 130610662 2012-01-01 168448247 2013-01-01 66586581 2014-01-01 58269229 2015-01-01 50449321 2016-01-01 56757749