Year	Average 1990 = 100
1975-12-31	169.28
1976-12-31	154.34
1977-12-31	122
1978-12-31	128.14
1979-12-31	132.01
1980-12-31	119.49
1981-12-31	117.04
1982-12-31	101.25
1983-12-31	94.19
1984-12-31	98.2
1985-12-31	90.57
1986-12-31	89.67
1987-12-31	91.5
1988-12-31	95.83
1989-12-31	97.98
1990-12-31	99.75
1991-12-31	99.97
1992-12-31	93.55
1993-12-31	80.57
1994-12-31	80
1995-12-31	82.23
1996-12-31	79.15
1997-12-31	76.68
1998-12-31	77.49
1999-12-31	74.61
2000-12-31	74.41
2001-12-31	74.21