Year	Percent
1978-01-01	2938000000.0000000
1979-01-01	3122500000.0000000
1980-01-01	3116000000.0000000
1981-01-01	3278500000.0000000
1982-01-01	3423000000.0000000
1983-01-01	3369750000.0000000
1984-01-01	3803250000.0000000
1985-01-01	3752000000.0000000
1986-01-01	3657000000.0000000
1987-01-01	4297766467.5000000
1988-01-01	4416614149.5000000
1989-01-01	4428904992.0000000
1990-01-01	4285971700.7500005
1991-01-01	4089033629.0000000
1992-01-01	4262376367.7500000
1993-01-01	4538747244.0000000
1994-01-01	4828284239.7500000
1995-01-01	4939798129.2500000
1996-01-01	5032298894.2500000
1997-01-01	5018626090.5000000
1998-01-01	4898950639.2500000
1999-01-01	5037422922.2500000
2000-01-01	5255829681.7500000
2001-01-01	5289354314.5000000
2002-01-01	5620811516.5000000
2003-01-01	5870483324.2500000
2004-01-01	6095294480.5000000
2005-01-01	6129484173.2500000
2006-01-01	5979524115.2500000
2007-01-01	6004648302.0000000
2008-01-01	5688268260.5000000
2009-01-01	5142295461.2500000
2010-01-01	5362536929.7500000
2011-01-01	5323677914.0000000
2012-01-01	5394163456.7500000
2013-01-01	5443709724.7500000
2014-01-01	5514412413.7500000
2015-01-01	5623015587.7500000
2016-01-01	5772230217.2500000
2017-01-01	5897234131.5000000