Year	Millions of 2000 Dollars
1976-01-01	252.81700000000000
1977-01-01	269.95200000000000
1978-01-01	281.26300000000000
1979-01-01	265.79400000000004
1980-01-01	183.07000000000000
1981-01-01	136.02400000000000
1982-01-01	188.94799999999998
1983-01-01	187.04500000000000
1984-01-01	226.13800000000000
1985-01-01	253.27000000000000
1986-01-01	271.65500000000000
1987-01-01	281.85400000000004
1988-01-01	271.83200000000000
1989-01-01	363.25100000000000
1990-01-01	366.42900000000003
1991-01-01	349.38900000000000
1992-01-01	301.63000000000000
1993-01-01	304.26800000000000
1994-01-01	328.56900000000000
1995-01-01	357.75500000000000
1996-01-01	391.34300000000000
1997-01-01	341.70400000000000
1998-01-01	362.72300000000000
1999-01-01	322.97500000000000
2000-01-01	297.55800000000000
2001-01-01	300.77500000000000
2002-01-01	318.49900000000000
2003-01-01	369.15000000000000
2004-01-01	412.40500000000000
2005-01-01	421.95599999999996
2006-01-01	464.64000000000000
2007-01-01	551.97000000000000
2008-01-01	554.36800000000000
2009-01-01	623.35600000000000
2010-01-01	606.97000000000000
2011-01-01	594.69200000000000
2012-01-01	592.45700000000000
2013-01-01	519.75300000000000
2014-01-01	530.60500000000000
2015-01-01	545.50500000000000
2016-01-01	581.89900000000000