Year	US Dollars, Sum Over Component Sub-periods
1972-01-01	7099100000
1973-01-01	9691000000
1974-01-01	12146100000
1975-01-01	13189900000
1976-01-01	14852200000
1977-01-01	17462100000
1978-01-01	23663500000
1979-01-01	26946200000
1980-01-01	29475400000
1981-01-01	27269900000
1982-01-01	26390700000
1983-01-01	25796000000
1984-01-01	26095700000
1985-01-01	27410800000
1986-01-01	37536800000
1987-01-01	45547100000
1988-01-01	50989800000
1989-01-01	51877000000
1990-01-01	64008200000
1991-01-01	61857500000
1992-01-01	66248000000
1993-01-01	63978200000
1994-01-01	70976900000
1995-01-01	82449200000
1996-01-01	80678500000
1997-01-01	76867200000
1998-01-01	79445200000
1999-01-01	80829900000
2000-01-01	81606000000
2001-01-01	83025700000
2002-01-01	92145800000
2003-01-01	105309700000
2004-01-01	123304100000
2005-01-01	131200400000
2006-01-01	148139600000
2007-01-01	172546800000
2008-01-01	200249200000
2009-01-01	173391200000
2010-01-01	195696000000
2011-01-01	235263200000
2012-01-01	226552000000
2013-01-01	229721900000