Year Dollars 1992-01-01 88375234 1997-01-01 56343288 2002-01-01 261935636 2003-01-01 305336038 2004-01-01 401774170 2005-01-01 378826104 2006-01-01 288553029 2007-01-01 129135231 2008-01-01 169945547 2009-01-01 136282544 2010-01-01 292096402 2011-01-01 194856450 2012-01-01 155121947 2013-01-01 278387523 2014-01-01 278816796 2015-01-01 228287249 2016-01-01 348724784