Year	Millions of 2000 Dollars
1961-01-01	252.78000000000000
1962-01-01	251.15900000000002
1963-01-01	311.48200000000000
1964-01-01	367.03000000000000
1965-01-01	331.80100000000000
1966-01-01	340.21500000000000
1967-01-01	319.04000000000000
1968-01-01	331.99300000000005
1969-01-01	368.80100000000000
1970-01-01	411.61699999999996
1971-01-01	505.74900000000000
1972-01-01	580.81000000000000
1973-01-01	631.34000000000000
1974-01-01	788.63200000000000
1975-01-01	869.54900000000000
1976-01-01	772.09500000000000
1977-01-01	928.49899999999990
1978-01-01	970.92800000000000
1979-01-01	1008.70000000000000
1980-01-01	1069.86000000000000
1981-01-01	933.19900000000000
1982-01-01	897.70200000000000
1983-01-01	887.82100000000000
1984-01-01	869.38500000000000
1985-01-01	870.51800000000000
1986-01-01	988.66000000000000
1987-01-01	784.64100000000010
1988-01-01	927.83600000000000
1989-01-01	906.51899999999990
1990-01-01	1099.37000000000000
1991-01-01	1210.61000000000000
1992-01-01	1268.93000000000000
1993-01-01	1333.36000000000000
1994-01-01	1456.16000000000000
1995-01-01	1462.78000000000000
1996-01-01	1474.88000000000000
1997-01-01	1182.36000000000000
1998-01-01	902.76100000000010
1999-01-01	1009.41000000000000
2000-01-01	864.50300000000000
2001-01-01	695.54600000000000
2002-01-01	784.45200000000000
2003-01-01	1105.86000000000000
2004-01-01	1340.83000000000000
2005-01-01	1432.50000000000000
2006-01-01	1715.39000000000000
2007-01-01	1785.47000000000000
2008-01-01	1536.75000000000000
2009-01-01	1506.40000000000000
2010-01-01	1617.74000000000000
2011-01-01	1712.56000000000000
2012-01-01	1783.80000000000000
2013-01-01	1897.69000000000000
2014-01-01	1997.18000000000000
2015-01-01	2166.89000000000000
2016-01-01	2305.99000000000000