Year	US Dollars, Sum Over Component Sub-periods
1990-01-01	-8340568947.78933
1991-01-01	-9209091305.67552
1992-01-01	-9440116912.30199
1993-01-01	-9935733062.91701
1994-01-01	-7965444029.57757
1995-01-01	-6779681599.04795
1996-01-01	-6098476053.13650
1997-01-01	-5698160660.88652
1998-01-01	-3439857543.29594
1999-01-01	-3663330790.28856
2000-01-01	-2790368828.31219
2001-01-01	-3160019159.45945
2002-01-01	-2722220747.85701
2003-01-01	-5197241182.31643
2004-01-01	-4493149983.02707
2005-01-01	-4936006327.15519
2006-01-01	-6618081370.57553
2007-01-01	-11471389011.70500
2008-01-01	-14241844707.93950
2009-01-01	-14224844121.89890
2010-01-01	-21258119049.73750
2011-01-01	-22866675091.62140
2012-01-01	-24223966108.19690
2013-01-01	-23701007159.32530