Year	US Dollars, Sum Over Component Sub-periods
1982-01-01	-1135420000.000000
1983-01-01	1260960000.000000
1984-01-01	2800510000.000000
1985-01-01	1687930000.000000
1986-01-01	4328430000.000000
1987-01-01	3546700000.000000
1988-01-01	3826220000.000000
1989-01-01	2332840000.000000
1990-01-01	2506100000.000000
1991-01-01	5057180000.000000
1992-01-01	6264960000.000000
1993-01-01	7298500000.000000
1994-01-01	9357930000.000000
1995-01-01	16908529999.999998
1996-01-01	18743780000.000000
1997-01-01	19023610000.000000
1998-01-01	17169259999.999998
1999-01-01	16778550000.000000
2000-01-01	15984310000.000000
2001-01-01	16040930000.000000
2002-01-01	15614990000.000000
2003-01-01	18557300000.000000
2004-01-01	23088710000.000000
2005-01-01	19558200000.000000
2006-01-01	21611670000.000000
2007-01-01	17758630000.000000
2008-01-01	17051150000.000002
2009-01-01	12279240000.000000
2010-01-01	11674380000.000000
2011-01-01	11537040000.000000
2012-01-01	11165820000.000000
2013-01-01	9878810000.000000