Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	1190000000
1981-01-01	1735000000
1982-01-01	1808000000
1983-01-01	1529000000
1984-01-01	1318000000
1985-01-01	1003000000
1986-01-01	902000000
1987-01-01	950000000
1988-01-01	1099000000
1989-01-01	1370000000
1990-01-01	1590000000
1991-01-01	1685000000
1992-01-01	1599000000
1993-01-01	1295000000
1994-01-01	1160000000
1995-01-01	1597000000
1996-01-01	1663000000
1997-01-01	1881000000
1998-01-01	2549000000
1999-01-01	2766000000
2000-01-01	3617000000
2001-01-01	2724000000
2002-01-01	2541000000
2003-01-01	2914000000
2004-01-01	3046000000
2005-01-01	5610000000
2006-01-01	8410000000
2007-01-01	10910000000
2008-01-01	7361000000
2009-01-01	5725000000
2010-01-01	6267000000
2011-01-01	7768000000
2012-01-01	7575000000
2013-01-01	8107000000
2014-01-01	9130000000