Year	Average 1990 = 100
1975-12-31	474.81
1976-12-31	470.88
1977-12-31	461.22
1978-12-31	407.03
1979-12-31	370.12
1980-12-31	334.82
1981-12-31	321.2
1982-12-31	291.05
1983-12-31	237.94
1984-12-31	210.75
1985-12-31	149.24
1986-12-31	131.36
1987-12-31	120.53
1988-12-31	114.58
1989-12-31	106.59
1990-12-31	94.79
1991-12-31	85.63
1992-12-31	78.19
1993-12-31	72.69
1994-12-31	68.91
1995-12-31	66.44
1996-12-31	66.29
1997-12-31	65.17
1998-12-31	61.98
1999-12-31	59.48
2000-12-31	57.55
2001-12-31	57.5