Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	296000000
1981-01-01	403000000
1982-01-01	262000000
1983-01-01	258000000
1984-01-01	260000000
1985-01-01	271000000
1986-01-01	534000000
1987-01-01	671000000
1988-01-01	604000000
1989-01-01	357000000
1990-01-01	728000000
1991-01-01	857000000
1992-01-01	1070000000
1993-01-01	863000000
1994-01-01	786000000
1995-01-01	809000000
1996-01-01	773000000
1997-01-01	728000000
1998-01-01	577000000
1999-01-01	569000000
2000-01-01	466000000
2001-01-01	721000000
2002-01-01	207000000
2003-01-01	535000000
2004-01-01	667000000
2005-01-01	727000000
2006-01-01	787000000
2007-01-01	821000000
2008-01-01	1139000000
2009-01-01	905000000
2010-01-01	983000000
2011-01-01	1234000000
2012-01-01	673000000
2013-01-01	1626000000
2014-01-01	2530000000