Year	Millions of 2000 Dollars
1960-01-01	231.33500000000000
1961-01-01	258.47300000000000
1962-01-01	213.05400000000000
1963-01-01	245.70000000000000
1964-01-01	234.83000000000000
1965-01-01	214.02100000000000
1966-01-01	224.94500000000000
1967-01-01	258.17000000000000
1968-01-01	284.16500000000000
1969-01-01	249.75500000000000
1970-01-01	279.27600000000000
1971-01-01	310.91500000000000
1972-01-01	326.04600000000000
1973-01-01	374.45200000000000
1974-01-01	491.30300000000005
1975-01-01	516.10800000000010
1976-01-01	514.51500000000000
1977-01-01	521.54900000000000
1978-01-01	574.72600000000000
1979-01-01	641.49900000000000
1980-01-01	693.11800000000000
1981-01-01	751.94200000000000
1982-01-01	781.20500000000000
1983-01-01	597.38100000000000
1984-01-01	536.46900000000000
1985-01-01	793.21300000000010
1986-01-01	812.59500000000000
1987-01-01	996.62600000000010
1988-01-01	803.32300000000000
1989-01-01	828.42500000000000
1990-01-01	1043.17000000000000
1991-01-01	954.07200000000000
1992-01-01	949.07200000000000
1993-01-01	633.59500000000000
1994-01-01	436.19100000000000
1995-01-01	463.87300000000005
1996-01-01	486.00300000000004
1997-01-01	457.69800000000004
1998-01-01	418.43400000000000
1999-01-01	420.58500000000000
2000-01-01	597.31200000000000
2001-01-01	429.98100000000000
2002-01-01	565.01800000000000
2003-01-01	651.66199999999990
2004-01-01	799.36600000000010
2005-01-01	917.81100000000000
2006-01-01	1455.59000000000000
2007-01-01	1673.66000000000000
2008-01-01	2167.49000000000000
2009-01-01	2292.73000000000000
2010-01-01	2882.33000000000000
2011-01-01	3645.16000000000000
2012-01-01	4227.83000000000000
2013-01-01	4399.68000000000000
2014-01-01	4369.16000000000000
2015-01-01	3434.11000000000000
2016-01-01	2777.53000000000000