Year Dollars 1992-01-01 4344901 1997-01-01 4940267 2002-01-01 8028745 2003-01-01 6282056 2004-01-01 4991142 2005-01-01 12451489 2006-01-01 11208280 2007-01-01 14137018 2008-01-01 13899308 2009-01-01 11116878 2010-01-01 61483342 2011-01-01 27256906 2012-01-01 147391436 2013-01-01 148145027 2016-01-01 68948928