Year	Dollars
1976-01-01	1866000000
1977-01-01	1390000000
1978-01-01	2129000000
1979-01-01	5353000000
1980-01-01	6167900000
1981-01-01	4642700000
1982-01-01	4211400000
1983-01-01	2737100000
1984-01-01	2388200000
1985-01-01	2950500000
1986-01-01	-3600700000
1987-01-01	-9379400000
1988-01-01	-4455100000
1989-01-01	-2424500000
1990-01-01	2369300000
1991-01-01	5919600000
1992-01-01	5189900000
1993-01-01	1171800000
1994-01-01	10330400000
1995-01-01	16768300000
1996-01-01	23874200000
1997-01-01	-9143100000
1998-01-01	-9947200000
1999-01-01	13344100000
2000-01-01	11003400000
2001-01-01	2905100000
2002-01-01	5876400000
2003-01-01	10900400000
2004-01-01	4996700000
2005-01-01	2616800000
2006-01-01	11087600000
2007-01-01	-6360700000
2008-01-01	-57709200000