Year	Dollars
1992-01-01	17475072
1997-01-01	49264445
2002-01-01	124011767
2003-01-01	177264768
2004-01-01	209288780
2005-01-01	269070179
2006-01-01	280673693
2007-01-01	429711525
2008-01-01	546754625
2009-01-01	547429934
2010-01-01	566985720
2011-01-01	655108128
2012-01-01	546455874
2013-01-01	546226798
2014-01-01	608556022
2015-01-01	473225752
2016-01-01	473019528