Year Dollars 1992-01-01 48332910 1997-01-01 46638443 2002-01-01 26209595 2003-01-01 22229492 2004-01-01 29278944 2005-01-01 20379272 2006-01-01 52733821 2007-01-01 30501337 2008-01-01 131767308 2009-01-01 146436417 2010-01-01 209683450 2011-01-01 233976925 2012-01-01 246480413 2013-01-01 481725798 2014-01-01 300711510 2015-01-01 277220021 2016-01-01 397021824