Year	US Dollars, Sum Over Component Sub-periods
1971-01-01	1180520000.0000000
1972-01-01	1232130000.0000000
1973-01-01	5111080000.0000000
1974-01-01	10618970000.0000000
1975-01-01	4906010000.0000000
1976-01-01	3880420000.0000000
1977-01-01	4173020000.0000005
1978-01-01	9262300000.0000000
1979-01-01	-5792590000.0000000
1980-01-01	-15753420000.0000000
1981-01-01	-5216240000.0000000
1982-01-01	5503020000.0000000
1983-01-01	4313850000.0000000
1984-01-01	9194410000.0000000
1985-01-01	17973250000.0000000
1986-01-01	38799560000.0000000
1987-01-01	44530680000.0000000
1988-01-01	54141380000.0000000
1989-01-01	57192520000.0000000
1990-01-01	46624260000.0000000
1991-01-01	-23937890000.0000000
1992-01-01	-22724450000.0000000
1993-01-01	-18984880000.0000000
1994-01-01	-30727980000.0000000
1995-01-01	-29643960000.0000000
1996-01-01	-14216040000.0000000
1997-01-01	-10538910000.0000000
1998-01-01	-16041850000.0000000
1999-01-01	-28275670000.0000000
2000-01-01	-32433040000.0000000
2001-01-01	-120570000.0000000
2002-01-01	41085030000.0000000
2003-01-01	46909490000.0000000
2004-01-01	127561470000.0000000
2005-01-01	139884650000.0000000
2006-01-01	182514350000.0000000
2007-01-01	249085150000.0000000
2008-01-01	226110370000.0000000
2009-01-01	198343860000.0000000
2010-01-01	211750880000.0000000
2011-01-01	247213700000.0000000
2012-01-01	255553750000.0000000
2013-01-01	273803190000.0000000