Year	US Dollars, Sum Over Component Sub-periods
1971-01-01	6368930000.00000
1972-01-01	7826210000.00000
1973-01-01	14589110000.00000
1974-01-01	20985230000.00000
1975-01-01	15920250000.00000
1976-01-01	15009390000.00000
1977-01-01	18120570000.00000
1978-01-01	22791960000.00000
1979-01-01	14858350000.00000
1980-01-01	7464670000.00000
1981-01-01	15154860000.00000
1982-01-01	24144270000.00000
1983-01-01	19357920000.00000
1984-01-01	21595750000.00000
1985-01-01	27787790000.00000
1986-01-01	54177530000.00000
1987-01-01	67506619999.99999
1988-01-01	76381080000.00000
1989-01-01	74970300000.00000
1990-01-01	69193500000.00000
1991-01-01	19045050000.00000
1992-01-01	27889790000.00000
1993-01-01	41085200000.00000
1994-01-01	50823810000.00000
1995-01-01	65320320000.00000
1996-01-01	70889980000.00000
1997-01-01	71157100000.00000
1998-01-01	76046460000.00000
1999-01-01	69659610000.00000
2000-01-01	55985550000.00000
2001-01-01	88363610000.00000
2002-01-01	126606950000.00000
2003-01-01	145920260000.00000
2004-01-01	188090040000.00000
2005-01-01	193892710000.00000
2006-01-01	199987820000.00000
2007-01-01	273063900000.00003
2008-01-01	263122280000.00003
2009-01-01	181117750000.00000
2010-01-01	207199790000.00000
2011-01-01	213468290000.00000
2012-01-01	222976960000.00000
2013-01-01	244517910000.00000