Year	Dollars
1992-01-01	1081905802
1997-01-01	1889542593
2002-01-01	1875924566
2003-01-01	1767155204
2004-01-01	1886198180
2005-01-01	2327769471
2006-01-01	3707052994
2007-01-01	3798901500
2008-01-01	4541562424
2009-01-01	4074300077
2010-01-01	4547074049
2011-01-01	5214300185
2012-01-01	4726350158
2013-01-01	4798422234
2014-01-01	4861064951
2015-01-01	5213115344
2016-01-01	4227229353