Year	US Dollars, Sum Over Component Sub-periods
1979-01-01	7617000000
1980-01-01	9585000000
1981-01-01	12733000000
1982-01-01	12095000000
1983-01-01	7422000000
1984-01-01	6520000000
1985-01-01	190000000
1986-01-01	1425000000
1987-01-01	3254000000
1988-01-01	-2101000000
1989-01-01	632000000
1990-01-01	4591000000
1991-01-01	163000000
1992-01-01	9910000000
1993-01-01	10412000000
1994-01-01	8518000000
1995-01-01	28744000000
1996-01-01	33514000000
1997-01-01	25408000000
1998-01-01	29381000000
1999-01-01	16981000000
2000-01-01	19053000000
2001-01-01	27088000000
2002-01-01	7571000000
2003-01-01	4613000000
2004-01-01	-7895000000
2005-01-01	-10127000000
2006-01-01	16152000000
2007-01-01	88330000000
2008-01-01	28302000000
2009-01-01	70172000000
2010-01-01	98793000000
2011-01-01	110808000000
2012-01-01	71886000000
2013-01-01	73159000000
2014-01-01	97809000000