Year	Dollars
1971-01-01	2476126146.72036980
1972-01-01	3097874065.18559980
1973-01-01	4036588157.14762020
1974-01-01	-11070341510.78440100
1975-01-01	-6423417727.09340000
1976-01-01	-867865349.77303898
1977-01-01	1399648023.51690010
1978-01-01	648726160.79107904
1979-01-01	6377451157.24417970
1980-01-01	2446786577.37078000
1981-01-01	4284075469.03937010
1982-01-01	1472262591.19900990
1983-01-01	-6411491856.45693020
1984-01-01	-12263138849.33370000
1985-01-01	-18494284683.30180000
1986-01-01	-35883405903.70169800
1987-01-01	-23137152498.85689900
1988-01-01	-70094417892.03030400
1989-01-01	-58682908246.11530300
1990-01-01	-55729386366.61170200
1991-01-01	6706822691.71329020
1992-01-01	47850108233.45570400
1993-01-01	12385631928.24340100
1994-01-01	34371896527.68029800
1995-01-01	41854442509.75930000
1996-01-01	15302374430.79610100
1997-01-01	1194753508.13056990
1998-01-01	17844261704.36330000
1999-01-01	-26886243622.60760100
2000-01-01	28988118166.06420100
2001-01-01	-16129917912.61949900
2002-01-01	-40754915901.09100300
2003-01-01	-71610948103.39639300
2004-01-01	-152980958695.12299000
2005-01-01	-164421475967.32599000
2006-01-01	-223356173136.29700000
2007-01-01	-289500012831.51398000
2008-01-01	-253089599414.26401000