Year	US Dollars, Sum Over Component Sub-periods
1993-01-01	24090000
1994-01-01	135940000
1995-01-01	139680000
1996-01-01	428080000
1997-01-01	587000000
1998-01-01	478280000
1999-01-01	280770000
2000-01-01	296280000
2001-01-01	330880000
2002-01-01	734410000
2003-01-01	1176370000
2004-01-01	1532350000
2005-01-01	1237430000
2006-01-01	2770790000
2007-01-01	3452350000
2008-01-01	2123520000
2009-01-01	-660560000
2010-01-01	-463260000
2011-01-01	-511300000
2012-01-01	398300000
2013-01-01	107320000