Year	US Dollars, Sum Over Component Sub-periods
1975-01-01	7318200000.000000
1976-01-01	7102700000.000000
1977-01-01	7342200000.000000
1978-01-01	7566500000.000000
1979-01-01	10915000000.000000
1980-01-01	15004800000.000000
1981-01-01	13654200000.000000
1982-01-01	12888800000.000000
1983-01-01	12334300000.000000
1984-01-01	11939600000.000000
1985-01-01	12643200000.000000
1986-01-01	14545300000.000000
1987-01-01	17960000000.000000
1988-01-01	20971100000.000000
1989-01-01	23453700000.000000
1990-01-01	25719200000.000000
1991-01-01	20596700000.000000
1992-01-01	20068600000.000000
1993-01-01	17110400000.000002
1994-01-01	21915200000.000000
1995-01-01	27904800000.000000
1996-01-01	29131500000.000000
1997-01-01	29391800000.000000
1998-01-01	30590400000.000000
1999-01-01	30161000000.000000
2000-01-01	32351600000.000000
2001-01-01	30646700000.000000
2002-01-01	32332700000.000000
2003-01-01	40138400000.000000
2004-01-01	48812800000.000000
2005-01-01	56217900000.000000
2006-01-01	66287000000.000000
2007-01-01	77501100000.000000
2008-01-01	86406300000.000000
2009-01-01	58447300000.000000
2010-01-01	66115800000.000000
2011-01-01	80805600000.000000
2012-01-01	73588800000.000000
2013-01-01	74440000000.000000