Year	Average 1990 = 100
1975-12-31	515.69
1976-12-31	465.1
1977-12-31	352.96
1978-12-31	274.06
1979-12-31	243.23
1980-12-31	250.54
1981-12-31	242.27
1982-12-31	200.72
1983-12-31	158.79
1984-12-31	142.29
1985-12-31	125.29
1986-12-31	115.49
1987-12-31	105.74
1988-12-31	104.27
1989-12-31	100.75
1990-12-31	99.51
1991-12-31	101.21
1992-12-31	103.46
1993-12-31	93.7
1994-12-31	95.19
1995-12-31	95.42
1996-12-31	95.35
1997-12-31	91.49
1998-12-31	92.95
1999-12-31	89.67
2000-12-31	89.53
2001-12-31	89.27