Year	Average 1990 = 100
1975-12-31	167.13
1976-12-31	157.85
1977-12-31	139.43
1978-12-31	124.98
1979-12-31	135.25
1980-12-31	125.68
1981-12-31	119.08
1982-12-31	114
1983-12-31	96.25
1984-12-31	96.26
1985-12-31	94.59
1986-12-31	90.8
1987-12-31	89.62
1988-12-31	92.68
1989-12-31	97.16
1990-12-31	100
1991-12-31	100.21
1992-12-31	97.87
1993-12-31	86.77
1994-12-31	81.06
1995-12-31	80.42
1996-12-31	80.9
1997-12-31	77.41
1998-12-31	77.03
1999-12-31	75.93
2000-12-31	73.83
2001-12-31	74.17