Year	U.S.=100
1970-01-01	36.82854407
1971-01-01	36.97209909
1972-01-01	38.09335394
1973-01-01	36.05328878
1974-01-01	34.06640792
1975-01-01	40.98763206
1976-01-01	45.25588203
1977-01-01	46.19230542
1978-01-01	46.63997354
1979-01-01	43.55132620
1980-01-01	41.65358327
1981-01-01	44.84150745
1982-01-01	44.66216551
1983-01-01	39.67077444
1984-01-01	37.26991395
1985-01-01	41.83441543
1986-01-01	40.38689630
1987-01-01	36.92669538
1988-01-01	38.25635381
1989-01-01	36.80303874
1990-01-01	27.12067527
1991-01-01	30.04213005
1992-01-01	28.55044760
1993-01-01	22.50276058
1994-01-01	21.92316801
1995-01-01	21.93185058
1996-01-01	23.54300048
1997-01-01	25.97128941
1998-01-01	26.07697932
1999-01-01	19.12474041
2000-01-01	17.86102023
2001-01-01	17.92869753
2002-01-01	19.61403419
2003-01-01	20.90019251
2004-01-01	21.19225273
2005-01-01	24.22069822
2006-01-01	24.37346236
2007-01-01	26.07733776
2008-01-01	27.56169877
2009-01-01	28.07752964
2010-01-01	27.55518153