Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	6000000
1981-01-01	102000000
1982-01-01	69000000
1983-01-01	68500000
1984-01-01	110200000
1985-01-01	233500000
1986-01-01	459600000
1987-01-01	616300000
1988-01-01	1014100000
1989-01-01	1117800000
1990-01-01	788500000
1991-01-01	1179800000
1992-01-01	728300000
1993-01-01	588100000
1994-01-01	809000000
1995-01-01	1775800000
1996-01-01	2325400000
1997-01-01	2844200000
1998-01-01	5412300000
1999-01-01	9333400000
2000-01-01	9283400000
2001-01-01	3527700000
2002-01-01	2392300000
2003-01-01	3525500000
2004-01-01	9246200000
2005-01-01	6308500000
2006-01-01	3586400000
2007-01-01	1784400000
2008-01-01	3310700000
2009-01-01	2249000000
2010-01-01	1094100000
2011-01-01	4836500000
2012-01-01	5628900000
2013-01-01	6802500000