Year	US Dollars, Sum Over Component Sub-periods
1971-01-01	9761530000.00000
1972-01-01	11357170000.00000
1973-01-01	15153910000.00000
1974-01-01	17555630000.00000
1975-01-01	21019260000.00000
1976-01-01	22352740000.00000
1977-01-01	25596200000.00000
1978-01-01	31939850000.00000
1979-01-01	39282020000.00000
1980-01-01	45042440000.00000
1981-01-01	40896630000.00000
1982-01-01	40363280000.00000
1983-01-01	38344090000.00000
1984-01-01	35208920000.00000
1985-01-01	35653410000.00000
1986-01-01	47360250000.00000
1987-01-01	58756590000.00000
1988-01-01	63811610000.00000
1989-01-01	65283040000.00000
1990-01-01	84826810000.00000
1991-01-01	90182600000.00000
1992-01-01	104121980000.00000
1993-01-01	102043930000.00000
1994-01-01	111579450000.00000
1995-01-01	133358019999.99998
1996-01-01	135267329999.99998
1997-01-01	130713840000.00000
1998-01-01	135639620000.00000
1999-01-01	141926620000.00000
2000-01-01	138177050000.00000
2001-01-01	142730850000.00000
2002-01-01	145464440000.00000
2003-01-01	173998660000.00000
2004-01-01	198093950000.00000
2005-01-01	212540060000.00000
2006-01-01	225459700000.00000
2007-01-01	261484420000.00000
2008-01-01	292772000000.00000
2009-01-01	261227170000.00000
2010-01-01	271298800000.00000
2011-01-01	303124060000.00000
2012-01-01	296465220000.00000
2013-01-01	318417360000.00000