Year	Dollars
1970-01-01	816480159.18352902
1971-01-01	1616142941.09161000
1972-01-01	1983940511.49312000
1973-01-01	-2840611535.07527020
1974-01-01	-8275200237.42129990
1975-01-01	-634633122.55954504
1976-01-01	-2848635144.51142980
1977-01-01	2346930782.64265010
1978-01-01	6053755847.43787960
1979-01-01	5913833271.35221960
1980-01-01	-10587453109.78120000
1981-01-01	-10466924747.29400100
1982-01-01	-7379556532.21621040
1983-01-01	698502532.45547199
1984-01-01	-3190274848.59305000
1985-01-01	-4083593651.79438020
1986-01-01	2462347811.72087000
1987-01-01	-2635330372.17571020
1988-01-01	-7180586717.22776990
1989-01-01	-12811916028.85680000
1990-01-01	-16478681121.92820000
1991-01-01	-24462637123.36600100
1992-01-01	-29216527371.36579900
1993-01-01	7802084937.23974040
1994-01-01	13209233396.89889900
1995-01-01	25075755017.65459800
1996-01-01	39999035649.61380000
1997-01-01	32403366400.61080200
1998-01-01	19997905328.05229900
1999-01-01	8110588072.94275000
2000-01-01	-5781140956.47801020
2001-01-01	-651956613.92740297
2002-01-01	-9369083271.64816090
2003-01-01	-19406866823.76950100
2004-01-01	-16454555274.44230100
2005-01-01	-29743940373.23949800
2006-01-01	-47827994064.06710100
2007-01-01	-51574277107.52580300
2008-01-01	-66252341839.08960000