Year	US Dollars, Sum Over Component Sub-periods
1995-01-01	11004210000
1996-01-01	14956610000
1997-01-01	26954920000
1998-01-01	24873340000
1999-01-01	17625880000
2000-01-01	-3300170000
2001-01-01	3534740000
2002-01-01	7505670000
2003-01-01	3236690000
2004-01-01	-4759820000
2005-01-01	-27912580000
2006-01-01	-38151260000
2007-01-01	-56309130000
2008-01-01	-86834110000
2009-01-01	-59704050000
2010-01-01	-70876710000
2011-01-01	-106538370000
2012-01-01	-90716500000
2013-01-01	-82679140000