Year Dollars 1992-01-01 88010320 1997-01-01 167043332 2002-01-01 129124550 2003-01-01 99490375 2004-01-01 153742590 2005-01-01 239553297 2006-01-01 236588046 2007-01-01 317220515 2008-01-01 413834938 2009-01-01 388370339 2010-01-01 552104607 2011-01-01 562910108 2012-01-01 492317168 2013-01-01 472152311 2014-01-01 485767453 2015-01-01 393831603 2016-01-01 229851468