Year	Millions of 2000 Dollars
1966-01-01	941.98399999999990
1967-01-01	943.70500000000000
1968-01-01	1081.39000000000000
1969-01-01	1136.30000000000000
1970-01-01	1286.97000000000000
1971-01-01	1231.86000000000000
1972-01-01	1535.16000000000000
1973-01-01	1975.28000000000000
1974-01-01	2273.91000000000000
1975-01-01	2229.09000000000000
1976-01-01	2801.65000000000000
1977-01-01	3276.49000000000000
1978-01-01	4046.15000000000000
1979-01-01	5314.17000000000000
1980-01-01	6164.59000000000000
1981-01-01	935.47500000000000
1982-01-01	808.28100000000010
1983-01-01	480.82700000000000
1984-01-01	449.90500000000000
1985-01-01	366.14000000000000
1986-01-01	993.87800000000000
1987-01-01	562.67000000000000
1988-01-01	426.50699999999995
1989-01-01	306.38300000000000
1990-01-01	317.03500000000000
1991-01-01	275.32800000000000
1992-01-01	334.88500000000000
1993-01-01	551.86600000000000
1994-01-01	890.11899999999990
1995-01-01	908.11700000000000
1996-01-01	1028.44000000000000
1997-01-01	1090.52000000000000
1998-01-01	1103.88000000000000
1999-01-01	1104.57000000000000
2000-01-01	1076.00000000000000
2001-01-01	1189.73000000000000
2002-01-01	1349.36000000000000
2003-01-01	1495.20000000000000
2004-01-01	1753.33000000000000
2005-01-01	1901.15000000000000
2006-01-01	2261.66000000000000
2007-01-01	2719.15000000000000
2008-01-01	3094.67000000000000
2009-01-01	3631.80000000000000
2010-01-01	4066.42000000000000
2011-01-01	2937.70000000000000
2012-01-01	3187.29000000000000
2013-01-01	3671.54000000000000
2014-01-01	3844.99000000000000
2015-01-01	3592.74000000000000
2016-01-01	3713.03000000000000