Quarterly Average 1990 = 100
1975-03-31 511.03
1975-06-30 513.07
1975-09-30 493.23
1975-12-31 474.81
1976-03-31 487.16
1976-06-30 487.14
1976-09-30 476.96
1976-12-31 470.88
1977-03-31 470.18
1977-06-30 469.61
1977-09-30 473
1977-12-31 461.22
1978-03-31 425.97
1978-06-30 431.83
1978-09-30 411.78
1978-12-31 407.03
1979-03-31 407.55
1979-06-30 401.9
1979-09-30 388.11
1979-12-31 370.12
1980-03-31 372.42
1980-06-30 333.53
1980-09-30 337.01
1980-12-31 334.82
1981-03-31 328.24
1981-06-30 322.5
1981-09-30 331.15
1981-12-31 321.2
1982-03-31 318.94
1982-06-30 295.69
1982-09-30 296.23
1982-12-31 291.05
1983-03-31 253.8
1983-06-30 260.36
1983-09-30 246.44
1983-12-31 237.94
1984-03-31 219.88
1984-06-30 233.77
1984-09-30 211.08
1984-12-31 210.75
1985-03-31 199.87
1985-06-30 192.14
1985-09-30 180.64
1985-12-31 149.24
1986-03-31 144.47
1986-06-30 143.28
1986-09-30 142.77
1986-12-31 131.36
1987-03-31 130.58
1987-06-30 127.67
1987-09-30 125.05
1987-12-31 120.53
1988-03-31 119.59
1988-06-30 119.44
1988-09-30 117.72
1988-12-31 114.58
1989-03-31 111.79
1989-06-30 109.67
1989-09-30 108.8
1989-12-31 106.59
1990-03-31 101.75
1990-06-30 99.73
1990-09-30 99.55
1990-12-31 94.79
1991-03-31 89.65
1991-06-30 88.08
1991-09-30 87.6
1991-12-31 85.63
1992-03-31 84.62
1992-06-30 81.03
1992-09-30 80.85
1992-12-31 78.19
1993-03-31 77.55
1993-06-30 75.39
1993-09-30 73.16
1993-12-31 72.69
1994-03-31 70.53
1994-06-30 69.84
1994-09-30 69.49
1994-12-31 68.91
1995-03-31 69.18
1995-06-30 68.56
1995-09-30 67.68
1995-12-31 66.44
1996-03-31 66.54
1996-06-30 67.37
1996-09-30 67.29
1996-12-31 66.29
1997-03-31 66.2
1997-06-30 65.23
1997-09-30 65.14
1997-12-31 65.17
1998-03-31 59.24
1998-06-30 61.26
1998-09-30 60.83
1998-12-31 61.98
1999-03-31 61.57
1999-06-30 61.47
1999-09-30 60.54
1999-12-31 59.48
2000-03-31 58.15
2000-06-30 58.14
2000-09-30 56.94
2000-12-31 57.55
2001-03-31 57.41
2001-06-30 56.97
2001-09-30 57.48
2001-12-31 57.5