Year	US Dollars, Sum Over Component Sub-periods
1982-01-01	-1360180000
1983-01-01	-1522620000
1984-01-01	-1558250000
1985-01-01	-1827520000
1986-01-01	-3947720000
1987-01-01	-4789980000
1988-01-01	-7468900000
1989-01-01	-10287530000
1990-01-01	-14747270000
1991-01-01	-7056960000
1992-01-01	-408800000
1993-01-01	-1357640000
1994-01-01	-6701340000
1995-01-01	-11214880000
1996-01-01	-5024620000
1997-01-01	-12633720000
1998-01-01	-24574140000
1999-01-01	-21927760000
2000-01-01	-40914250000
2001-01-01	-7294870000
2002-01-01	-10617820000
2003-01-01	-21133480000
2004-01-01	-22229240000
2005-01-01	-27709440000
2006-01-01	26690870000
2007-01-01	38844400000
2008-01-01	30331490000
2009-01-01	26213300000
2010-01-01	20368800000
2011-01-01	29895880000
2012-01-01	28970590000
2013-01-01	27851970000