Year	US Dollars, Sum Over Component Sub-periods
1972-01-01	7099090000.00000
1973-01-01	9690960000.00000
1974-01-01	12146090000.00000
1975-01-01	13189930000.00000
1976-01-01	14852250000.00000
1977-01-01	17462060000.00000
1978-01-01	23663460000.00000
1979-01-01	26946250000.00000
1980-01-01	29475420000.00000
1981-01-01	27269870000.00000
1982-01-01	26390730000.00000
1983-01-01	25795970000.00000
1984-01-01	26095670000.00000
1985-01-01	27410810000.00000
1986-01-01	37536800000.00000
1987-01-01	45547100000.00000
1988-01-01	50989820000.00000
1989-01-01	51877040000.00000
1990-01-01	64008200000.00000
1991-01-01	61857530000.00000
1992-01-01	66247990000.00001
1993-01-01	63978250000.00000
1994-01-01	70976940000.00000
1995-01-01	82449210000.00000
1996-01-01	80678530000.00000
1997-01-01	76867160000.00000
1998-01-01	79445190000.00000
1999-01-01	80829860000.00000
2000-01-01	81606000000.00000
2001-01-01	83025720000.00000
2002-01-01	92145820000.00000
2003-01-01	105309700000.00000
2004-01-01	123304110000.00000
2005-01-01	131200440000.00000
2006-01-01	148139560000.00000
2007-01-01	172546780000.00000
2008-01-01	200249170000.00000
2009-01-01	173391200000.00000
2010-01-01	195696010000.00000
2011-01-01	235263220000.00000
2012-01-01	226552020000.00000
2013-01-01	229721910000.00000