Year	US Dollars, Sum Over Component Sub-periods
1979-01-01	2407800000.000000
1980-01-01	1910200000.000000
1981-01-01	2521900000.000000
1982-01-01	3115200000.000000
1983-01-01	1326100000.000000
1984-01-01	1501200000.000000
1985-01-01	1418400000.000000
1986-01-01	317150000.000000
1987-01-01	1169100000.000000
1988-01-01	2805000000.000000
1989-01-01	1129900000.000000
1990-01-01	988800000.000000
1991-01-01	1102200000.000000
1992-01-01	2061000000.000000
1993-01-01	1290900000.000000
1994-01-01	2149900000.000000
1995-01-01	4405120000.000000
1996-01-01	10791690000.000000
1997-01-01	18992930000.000000
1998-01-01	28855610000.000000
1999-01-01	28578430000.000000
2000-01-01	32779239999.999996
2001-01-01	22457350000.000000
2002-01-01	16590200000.000000
2003-01-01	10143520000.000000
2004-01-01	18145880000.000000
2005-01-01	15066290000.000000
2006-01-01	18822210000.000000
2007-01-01	34584900000.000000
2008-01-01	45058160000.000000
2009-01-01	25948580000.000000
2010-01-01	48506490000.000000
2011-01-01	66660140000.000000
2012-01-01	65271850000.000000
2013-01-01	63995870000.000000
2014-01-01	62494750000.000000