Year	US Dollars, Sum Over Component Sub-periods
1994-01-01	1880000000
1995-01-01	3660000000
1996-01-01	4500000000
1997-01-01	4910000000
1998-01-01	6370000000
1999-01-01	7270000000
2000-01-01	9343000000
2001-01-01	5714000000
2002-01-01	4131000000
2003-01-01	4589000000
2004-01-01	12716000000
2005-01-01	10309000000
2006-01-01	19876000000
2007-01-01	23651000000
2008-01-01	14978000000
2009-01-01	13022000000
2010-01-01	14345000000
2011-01-01	20653000000
2012-01-01	6068000000
2013-01-01	-5167000000