Year	US Dollars, Sum Over Component Sub-periods
1970-01-01	-723300000.00000
1971-01-01	-390200000.00000
1972-01-01	695500000.00000
1973-01-01	1345500000.00000
1974-01-01	1442000000.00000
1975-01-01	1651500000.00000
1976-01-01	2307500000.00000
1977-01-01	620300000.00000
1978-01-01	-664000000.00000
1979-01-01	-338400000.00000
1980-01-01	94200000.00000
1981-01-01	4690000000.00000
1982-01-01	6475700000.00000
1983-01-01	5997400000.00000
1984-01-01	7063600000.00000
1985-01-01	6962400000.00000
1986-01-01	7507500000.00000
1987-01-01	5978700000.00000
1988-01-01	9861000000.00000
1989-01-01	9531300000.00000
1990-01-01	11863600000.00000
1991-01-01	12050300000.00000
1992-01-01	12250900000.00000
1993-01-01	16936300000.00000
1994-01-01	19199400000.00000
1995-01-01	24442700000.00000
1996-01-01	23219800000.00000
1997-01-01	21332600000.00000
1998-01-01	20426800000.00000
1999-01-01	16357000000.00000
2000-01-01	18514200000.00000
2001-01-01	19829800000.00000
2002-01-01	19079100000.00000
2003-01-01	36847400000.00000
2004-01-01	41514600000.00000
2005-01-01	48712100000.00000
2006-01-01	50039100000.00000
2007-01-01	57270300000.00000
2008-01-01	60768200000.00000
2009-01-01	47778700000.00000
2010-01-01	52942100000.00000
2011-01-01	60087000000.00000
2012-01-01	56462300000.00000
2013-01-01	66582399999.99999