Year	US Dollars, Sum Over Component Sub-periods
1990-01-01	-364260000
1991-01-01	-192920000
1992-01-01	-214830000
1993-01-01	-217400000
1994-01-01	-436520000
1995-01-01	-819710000
1996-01-01	-727540000
1997-01-01	-1013940000
1998-01-01	-3902200000
1999-01-01	-6109340000
2000-01-01	-4630000000
2001-01-01	-4068490000
2002-01-01	-11040790000
2003-01-01	-5554910000
2004-01-01	-18080120000
2005-01-01	-14303660000
2006-01-01	-15332050000
2007-01-01	-21150320000
2008-01-01	-18912770000
2009-01-01	-26617100000
2010-01-01	-22348380000
2011-01-01	1165250000
2012-01-01	-18525560000
2013-01-01	-22847540000