Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	-6437400000.000000
1981-01-01	-10114800000.000000
1982-01-01	-12261300000.000000
1983-01-01	-9123300000.000000
1984-01-01	-10076500000.000000
1985-01-01	-8996600000.000000
1986-01-01	-7519600000.000000
1987-01-01	-6801200000.000000
1988-01-01	-7245900000.000000
1989-01-01	-8302200000.000001
1990-01-01	-8625900000.000000
1991-01-01	-8608000000.000000
1992-01-01	-9594800000.000000
1993-01-01	-11429100000.000000
1994-01-01	-13011800000.000000
1995-01-01	-12678700000.000000
1996-01-01	-13463800000.000000
1997-01-01	-12093400000.000000
1998-01-01	-12811400000.000000
1999-01-01	-11950000000.000000
2000-01-01	-13791200000.000000
2001-01-01	-12965100000.000000
2002-01-01	-12226100000.000000
2003-01-01	-12244900000.000000
2004-01-01	-10043500000.000000
2005-01-01	-16459900000.000002
2006-01-01	-19418600000.000000
2007-01-01	-22942600000.000000
2008-01-01	-20255900000.000000
2009-01-01	-15163800000.000000
2010-01-01	-13303000000.000000
2011-01-01	-20985800000.000000
2012-01-01	-25868400000.000000
2013-01-01	-40734000000.000000
2014-01-01	-33876600000.000000
2015-01-01	-33953699999.999996
2016-01-01	-33597500000.000000