Year	US Dollars, Sum Over Component Sub-periods
1990-01-01	22050000
1991-01-01	18240000
1992-01-01	-12720000
1993-01-01	440000
1994-01-01	-1530000
1995-01-01	-9250000
1996-01-01	83130000
1997-01-01	148470000
1998-01-01	152130000
1999-01-01	68290000
2000-01-01	170700000
2001-01-01	173370000
2002-01-01	87400000
2003-01-01	332320000
2004-01-01	736540000
2005-01-01	3085920000
2006-01-01	3858220000
2007-01-01	6822300000
2008-01-01	916770000
2009-01-01	85830000
2010-01-01	245720000
2011-01-01	1104710000
2012-01-01	905300000
2013-01-01	347130000