Year	Millions of 2000 Dollars
1967-01-01	324.50800000000000
1968-01-01	354.49199999999996
1969-01-01	391.85100000000000
1970-01-01	411.02400000000000
1971-01-01	478.37900000000000
1972-01-01	523.34300000000010
1973-01-01	591.83400000000010
1974-01-01	564.61800000000000
1975-01-01	628.72600000000000
1976-01-01	821.82300000000000
1977-01-01	915.75899999999990
1978-01-01	975.76699999999990
1979-01-01	962.47899999999990
1980-01-01	922.41400000000000
1981-01-01	1013.69000000000000
1982-01-01	1085.41000000000000
1983-01-01	1160.62000000000000
1984-01-01	1345.63000000000000
1985-01-01	1716.24000000000000
1986-01-01	2128.51000000000000
1987-01-01	2612.75000000000000
1988-01-01	3093.90000000000000
1989-01-01	3498.61000000000000
1990-01-01	3436.75000000000000
1991-01-01	4124.71000000000000
1992-01-01	4788.86000000000000
1993-01-01	7735.64000000000000
1994-01-01	100.34899999999999
1995-01-01	277.37800000000000
1996-01-01	377.51300000000003
1997-01-01	441.89800000000000
1998-01-01	600.22000000000000
1999-01-01	327.19700000000000
2000-01-01	259.01000000000000
2001-01-01	319.84100000000000
2002-01-01	590.51699999999990
2003-01-01	665.04300000000000
2004-01-01	819.07800000000000
2005-01-01	868.61800000000000
2006-01-01	1045.72000000000000
2007-01-01	1297.34000000000000
2008-01-01	1569.93000000000000
2009-01-01	1838.83000000000000
2010-01-01	2005.93000000000000
2011-01-01	1967.98000000000000
2012-01-01	2347.14000000000000
2013-01-01	2567.82000000000000
2014-01-01	2686.96000000000000
2015-01-01	2459.79000000000000
2016-01-01	1978.88000000000000