Year	U.S.=100
1970-01-01	45.95566531
1971-01-01	44.72037469
1972-01-01	45.11985552
1973-01-01	45.91718154
1974-01-01	54.95979686
1975-01-01	51.24501742
1976-01-01	47.67828597
1977-01-01	52.13175928
1978-01-01	52.24419670
1979-01-01	53.86696359
1980-01-01	54.65712585
1981-01-01	52.11925249
1982-01-01	52.11192344
1983-01-01	50.66551441
1984-01-01	47.59239349
1985-01-01	40.34252407
1986-01-01	40.63159973
1987-01-01	46.33725723
1988-01-01	48.81522986
1989-01-01	53.90915135
1990-01-01	79.55709118
1991-01-01	85.23652672
1992-01-01	114.54837940
1993-01-01	292.72024400
1994-01-01	13.15307850
1995-01-01	23.56036751
1996-01-01	29.03763117
1997-01-01	28.63509568
1998-01-01	32.89862707
1999-01-01	30.28982469
2000-01-01	29.87951715
2001-01-01	24.78452689
2002-01-01	31.28545089
2003-01-01	33.55042536
2004-01-01	36.06544452
2005-01-01	39.60218020
2006-01-01	43.85354122
2007-01-01	46.07842791
2008-01-01	53.24686353
2009-01-01	54.60738685
2010-01-01	58.17266372