Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	135000000
1981-01-01	199000000
1982-01-01	225000000
1983-01-01	254000000
1984-01-01	232000000
1985-01-01	136000000
1986-01-01	126000000
1987-01-01	211000000
1988-01-01	207000000
1989-01-01	163000000
1990-01-01	207000000
1991-01-01	354000000
1992-01-01	324000000
1993-01-01	304000000
1994-01-01	250000000
1995-01-01	268000000
1996-01-01	304000000
1997-01-01	328000000
1998-01-01	606000000
1999-01-01	849000000
2000-01-01	997000000
2001-01-01	1133000000
2002-01-01	1380000000
2003-01-01	1146000000
2004-01-01	1081000000
2005-01-01	1092000000
2006-01-01	1158000000
2007-01-01	1343000000
2008-01-01	1032000000
2009-01-01	1462000000
2010-01-01	1500000000
2011-01-01	1356000000
2012-01-01	1383000000
2013-01-01	1424000000
2014-01-01	1381000000