Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	22671700000.000000
1981-01-01	22191400000.000000
1982-01-01	17637600000.000000
1983-01-01	12548100000.000000
1984-01-01	10549800000.000000
1985-01-01	8347500000.000000
1986-01-01	7908200000.000000
1987-01-01	9477900000.000000
1988-01-01	10511900000.000000
1989-01-01	9258600000.000000
1990-01-01	10987500000.000000
1991-01-01	11111600000.000000
1992-01-01	11943400000.000000
1993-01-01	10464800000.000000
1994-01-01	10811500000.000000
1995-01-01	10775200000.000000
1996-01-01	10431000000.000000
1997-01-01	11183300000.000000
1998-01-01	11521800000.000000
1999-01-01	17351100000.000000
2000-01-01	19636000000.000000
2001-01-01	19773800000.000000
2002-01-01	19918700000.000000
2003-01-01	24210600000.000000
2004-01-01	33226199999.999996
2005-01-01	33871400000.000000
2006-01-01	35602100000.000000
2007-01-01	42899400000.000000
2008-01-01	49805500000.000000
2009-01-01	37487500000.000000
2010-01-01	37716900000.000000
2011-01-01	39781600000.000000
2012-01-01	35380700000.000000
2013-01-01	37116300000.000000