Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	6340600000.000000
1981-01-01	8216799999.999999
1982-01-01	5829900000.000000
1983-01-01	4368100000.000000
1984-01-01	5111600000.000000
1985-01-01	5381900000.000000
1986-01-01	5021400000.000000
1987-01-01	5081800000.000000
1988-01-01	6064200000.000000
1989-01-01	7659600000.000000
1990-01-01	9942200000.000000
1991-01-01	10541000000.000000
1992-01-01	11488100000.000000
1993-01-01	11549100000.000000
1994-01-01	12269700000.000000
1995-01-01	9537200000.000000
1996-01-01	10634500000.000000
1997-01-01	12413100000.000000
1998-01-01	12842700000.000000
1999-01-01	14294900000.000000
2000-01-01	17056700000.000000
2001-01-01	16929200000.000000
2002-01-01	17809100000.000000
2003-01-01	18297800000.000000
2004-01-01	20546800000.000000
2005-01-01	22804200000.000000
2006-01-01	23641100000.000000
2007-01-01	24904400000.000000
2008-01-01	25649000000.000000
2009-01-01	25042600000.000000
2010-01-01	25791900000.000000
2011-01-01	30374900000.000000
2012-01-01	30150100000.000000
2013-01-01	31177100000.000000
2014-01-01	33537300000.000004
2015-01-01	32055700000.000000
2016-01-01	31925600000.000000