Year	US Dollars, Sum Over Component Sub-periods
1979-01-01	11290000
1980-01-01	142560000
1981-01-01	185530000
1982-01-01	-14230000
1983-01-01	110640000
1984-01-01	161310000
1985-01-01	143440000
1986-01-01	79710000
1987-01-01	65140000
1988-01-01	91530000
1989-01-01	246330000
1990-01-01	833010000
1991-01-01	1555420000
1992-01-01	2206120000
1993-01-01	1602400000
1994-01-01	2414070000
1995-01-01	3622410000
1996-01-01	2446480000
1997-01-01	1822910000
1998-01-01	1457990000
1999-01-01	1689400000
2000-01-01	1521070000
2001-01-01	1637520000
2002-01-01	2389820000
2003-01-01	2866590000
2004-01-01	3236350000
2005-01-01	3557770000
2006-01-01	4306330000
2007-01-01	4028990000
2008-01-01	4223870000
2009-01-01	3337510000
2010-01-01	2901550000
2011-01-01	2984240000
2012-01-01	2845930000
2013-01-01	3366370000
2014-01-01	1922300000