Year	Dollars
1992-01-01	26425368
1997-01-01	131876968
2002-01-01	135161923
2003-01-01	68124759
2004-01-01	116012852
2005-01-01	118246388
2006-01-01	234087094
2007-01-01	306372260
2008-01-01	379953001
2009-01-01	377071579
2010-01-01	434397936
2011-01-01	529956189
2012-01-01	1165254975
2013-01-01	1310645080
2014-01-01	736081571
2015-01-01	697020299
2016-01-01	562278792