Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	4000000.000000000
1981-01-01	3300000.000000000
1982-01-01	4500000.000000000
1983-01-01	5700000.000000000
1984-01-01	8199999.999999999
1985-01-01	8100000.000000000
1986-01-01	6000000.000000000
1987-01-01	5400000.000000000
1988-01-01	5800000.000000000
1989-01-01	8199999.999999999
1990-01-01	7000000.000000000
1991-01-01	6600000.000000000
1992-01-01	5400000.000000000
1993-01-01	1700000.000000000
1994-01-01	8000000.000000000
1995-01-01	14500000.000000000
1996-01-01	18900000.000000000
1997-01-01	16600000.000000002
1998-01-01	463600000.000000000
1999-01-01	95100000.000000000
2000-01-01	97800000.000000000
2001-01-01	42400000.000000000
2002-01-01	46500000.000000000
2003-01-01	58500000.000000000
2004-01-01	71700000.000000000
2005-01-01	146800000.000000000
2006-01-01	290100000.000000000
2007-01-01	526000000.000000000
2008-01-01	1863400000
2009-01-01	1855500000
2010-01-01	1890200000
2011-01-01	2260700000
2012-01-01	2626900000
2013-01-01	2417000000