Year	US Dollars, Sum Over Component Sub-periods
1990-01-01	-2132710000
1991-01-01	-1881260000
1992-01-01	-1002080000
1993-01-01	-2950690000
1994-01-01	-3309840000
1995-01-01	-1495900000
1996-01-01	-1890650000
1997-01-01	-5703830000
1998-01-01	2213820000
1999-01-01	-1760140000
2000-01-01	8848060000
2001-01-01	343000000
2002-01-01	1490950000
2003-01-01	-1444930000
2004-01-01	5067950000
2005-01-01	-279640000
2006-01-01	6267120000
2007-01-01	16549270000
2008-01-01	23655580000
2009-01-01	-3213390000
2010-01-01	8745190000
2011-01-01	13643720000
2012-01-01	-1374030000
2013-01-01	-13240450000