Quarter	Average 1990 = 100
1975-03-31	102.4
1975-06-30	103.25
1975-09-30	101.86
1975-12-31	103.49
1976-03-31	105.53
1976-06-30	105.79
1976-09-30	104.58
1976-12-31	105.54
1977-03-31	105.52
1977-06-30	98.75
1977-09-30	97.72
1977-12-31	94.86
1978-03-31	89.28
1978-06-30	88.44
1978-09-30	88.54
1978-12-31	88.17
1979-03-31	88.49
1979-06-30	89.34
1979-09-30	90.58
1979-12-31	90.99
1980-03-31	94.24
1980-06-30	92.88
1980-09-30	93.23
1980-12-31	93.36
1981-03-31	93.9
1981-06-30	95.59
1981-09-30	96.13
1981-12-31	96.8
1982-03-31	98.48
1982-06-30	99.15
1982-09-30	99.8
1982-12-31	91.37
1983-03-31	91.69
1983-06-30	92.75
1983-09-30	93.46
1983-12-31	93.37
1984-03-31	94.61
1984-06-30	94.81
1984-09-30	95.3
1984-12-31	94.98
1985-03-31	94.97
1985-06-30	94.14
1985-09-30	94.94
1985-12-31	94.95
1986-03-31	94.53
1986-06-30	92.46
1986-09-30	92.59
1986-12-31	92.3
1987-03-31	93.79
1987-06-30	94.1
1987-09-30	95.16
1987-12-31	93.9
1988-03-31	95.62
1988-06-30	95.35
1988-09-30	95.51
1988-12-31	96.55
1989-03-31	99.57
1989-06-30	99.55
1989-09-30	99.18
1989-12-31	99.21
1990-03-31	99.98
1990-06-30	99.99
1990-09-30	99.42
1990-12-31	99.22
1991-03-31	98.4
1991-06-30	97.48
1991-09-30	96.2
1991-12-31	87.55
1992-03-31	86.4
1992-06-30	87.01
1992-09-30	77.93
1992-12-31	77.49
1993-03-31	70.5
1993-06-30	74.27
1993-09-30	72.31
1993-12-31	75.55
1994-03-31	77.18
1994-06-30	76.73
1994-09-30	81.96
1994-12-31	84.42
1995-03-31	86.86
1995-06-30	87.42
1995-09-30	88.65
1995-12-31	86.78
1996-03-31	82.9
1996-06-30	83.78
1996-09-30	85.11
1996-12-31	84.54
1997-03-31	83.94
1997-06-30	82.2
1997-09-30	81.45
1997-12-31	80.65
1998-03-31	79.71
1998-06-30	80.77
1998-09-30	82.98
1998-12-31	83.06
1999-03-31	80.63
1999-06-30	79.67
1999-09-30	79.43
1999-12-31	77.89
2000-03-31	76.6
2000-06-30	77.44
2000-09-30	76.13
2000-12-31	78.08
2001-03-31	78.04
2001-06-30	77.28
2001-09-30	78.92
2001-12-31	78.38