Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	58400000.000000
1981-01-01	997100000.000000
1982-01-01	646300000.000000
1983-01-01	-518900000.000000
1984-01-01	-435200000.000000
1985-01-01	-595800000.000000
1986-01-01	-518500000.000000
1987-01-01	-1004000000.000000
1988-01-01	999800000.000000
1989-01-01	451300000.000000
1990-01-01	3408500000.000000
1991-01-01	12753200000.000000
1992-01-01	18041100000.000000
1993-01-01	28819300000.000000
1994-01-01	8547200000.000001
1995-01-01	-9714700000.000000
1996-01-01	13359000000.000000
1997-01-01	4972500000.000000
1998-01-01	954300000.000000
1999-01-01	11973000000.000000
2000-01-01	-1395100000.000000
2001-01-01	2929300000.000000
2002-01-01	-1670600000.000000
2003-01-01	3005600000.000000
2004-01-01	5006300000.000000
2005-01-01	7060400000.000000
2006-01-01	122300000.000000
2007-01-01	13285500000.000000
2008-01-01	4577200000.000000
2009-01-01	15287800000.000000
2010-01-01	38039700000.000000
2011-01-01	42512300000.000000
2012-01-01	81841900000.000000
2013-01-01	51118700000.000000
2014-01-01	47078800000.000000
2015-01-01	20376800000.000000
2016-01-01	28646800000.000000