Quarterly Average 1990 = 100
1975-03-31 529.35
1975-06-30 528.65
1975-09-30 517.31
1975-12-31 515.69
1976-03-31 499.7
1976-06-30 473.09
1976-09-30 474.03
1976-12-31 465.1
1977-03-31 381.05
1977-06-30 380.02
1977-09-30 368.34
1977-12-31 352.96
1978-03-31 336.12
1978-06-30 303.26
1978-09-30 287.85
1978-12-31 274.06
1979-03-31 264.95
1979-06-30 256.98
1979-09-30 248.86
1979-12-31 243.23
1980-03-31 260.83
1980-06-30 251.75
1980-09-30 250.56
1980-12-31 250.54
1981-03-31 252.01
1981-06-30 253.92
1981-09-30 245.87
1981-12-31 242.27
1982-03-31 239.28
1982-06-30 211.69
1982-09-30 207.38
1982-12-31 200.72
1983-03-31 194.84
1983-06-30 168.4
1983-09-30 164.39
1983-12-31 158.79
1984-03-31 153.64
1984-06-30 147.6
1984-09-30 147.24
1984-12-31 142.29
1985-03-31 135.34
1985-06-30 134.03
1985-09-30 126.12
1985-12-31 125.29
1986-03-31 125.64
1986-06-30 121.54
1986-09-30 118.27
1986-12-31 115.49
1987-03-31 113.42
1987-06-30 111.64
1987-09-30 110.28
1987-12-31 105.74
1988-03-31 106.78
1988-06-30 106.22
1988-09-30 104.78
1988-12-31 104.27
1989-03-31 103.62
1989-06-30 102.85
1989-09-30 102
1989-12-31 100.75
1990-03-31 99.94
1990-06-30 99.47
1990-09-30 99.01
1990-12-31 99.51
1991-03-31 99.28
1991-06-30 100.01
1991-09-30 101.81
1991-12-31 101.21
1992-03-31 102.72
1992-06-30 106.25
1992-09-30 104.84
1992-12-31 103.46
1993-03-31 103.21
1993-06-30 98.71
1993-09-30 94.23
1993-12-31 93.7
1994-03-31 92.97
1994-06-30 93.65
1994-09-30 94.94
1994-12-31 95.19
1995-03-31 97.36
1995-06-30 96.01
1995-09-30 95.28
1995-12-31 95.42
1996-03-31 95.54
1996-06-30 94.56
1996-09-30 95.46
1996-12-31 95.35
1997-03-31 94.66
1997-06-30 92.95
1997-09-30 92.09
1997-12-31 91.49
1998-03-31 90.8
1998-06-30 91.62
1998-09-30 92.9
1998-12-31 92.95
1999-03-31 91.5
1999-06-30 90.87
1999-09-30 90.72
1999-12-31 89.67
2000-03-31 88.82
2000-06-30 89.47
2000-09-30 88.27
2000-12-31 89.53
2001-03-31 89.27
2001-06-30 88.61
2001-09-30 89.51
2001-12-31 89.27