Year	US Dollars, Sum Over Component Sub-periods
1972-01-01	8684100000.00000
1973-01-01	11830100000.00000
1974-01-01	14810500000.00000
1975-01-01	13659200000.00000
1976-01-01	15191600000.00000
1977-01-01	18384800000.00000
1978-01-01	24470400000.00000
1979-01-01	30357500000.00000
1980-01-01	36510200000.00000
1981-01-01	31684000000.00000
1982-01-01	29477500000.00000
1983-01-01	29778200000.00000
1984-01-01	30241200000.00000
1985-01-01	31277100000.00000
1986-01-01	41901600000.00000
1987-01-01	51522600000.00000
1988-01-01	57347100000.00000
1989-01-01	59265700000.00000
1990-01-01	71185300000.00000
1991-01-01	67783100000.00001
1992-01-01	67247700000.00000
1993-01-01	62320800000.00000
1994-01-01	69341300000.00000
1995-01-01	81569700000.00000
1996-01-01	79750900000.00000
1997-01-01	77180300000.00000
1998-01-01	81051200000.00000
1999-01-01	81013300000.00000
2000-01-01	84104100000.00000
2001-01-01	85782200000.00000
2002-01-01	88879400000.00000
2003-01-01	102098500000.00000
2004-01-01	117908900000.00000
2005-01-01	128789100000.00000
2006-01-01	144098100000.00000
2007-01-01	164734300000.00000
2008-01-01	186308100000.00000
2009-01-01	158249900000.00000
2010-01-01	183055900000.00000
2011-01-01	219029300000.00000
2012-01-01	210011900000.00000
2013-01-01	211758900000.00000