Quarterly Average 1990 = 100
1975-03-31 527.89
1975-06-30 525.74
1975-09-30 521.35
1975-12-31 520.08
1976-03-31 515.18
1976-06-30 489.9
1976-09-30 476.61
1976-12-31 470.91
1977-03-31 429.1
1977-06-30 380.16
1977-09-30 380.8
1977-12-31 361.54
1978-03-31 347.11
1978-06-30 318.38
1978-09-30 295.27
1978-12-31 280.92
1979-03-31 270.32
1979-06-30 261.48
1979-09-30 254.08
1979-12-31 247.58
1980-03-31 251.34
1980-06-30 254.55
1980-09-30 250.68
1980-12-31 251.03
1981-03-31 252.63
1981-06-30 253.42
1981-09-30 250.92
1981-12-31 244.46
1982-03-31 240.44
1982-06-30 231.82
1982-09-30 209.54
1982-12-31 203.96
1983-03-31 197.77
1983-06-30 190.63
1983-09-30 166.74
1983-12-31 162.15
1984-03-31 156.3
1984-06-30 151.93
1984-09-30 147.53
1984-12-31 143.34
1985-03-31 139.56
1985-06-30 135.41
1985-09-30 131.31
1985-12-31 127.05
1986-03-31 125.41
1986-06-30 123.43
1986-09-30 119.86
1986-12-31 116.98
1987-03-31 114.46
1987-06-30 112.8
1987-09-30 111.22
1987-12-31 108.87
1988-03-31 107.31
1988-06-30 106.47
1988-09-30 105.59
1988-12-31 104.55
1989-03-31 103.89
1989-06-30 103.11
1989-09-30 102.33
1989-12-31 101.4
1990-03-31 100.49
1990-06-30 99.84
1990-09-30 99.29
1990-12-31 100.39
1991-03-31 100.45
1991-06-30 99.94
1991-09-30 101.66
1991-12-31 101.37
1992-03-31 102.63
1992-06-30 105.19
1992-09-30 104.52
1992-12-31 104.96
1993-03-31 103.66
1993-06-30 100.33
1993-09-30 95.05
1993-12-31 93.86
1994-03-31 93.6
1994-06-30 92.94
1994-09-30 95.02
1994-12-31 95.1
1995-03-31 96.12
1995-06-30 96.15
1995-09-30 95.86
1995-12-31 95.35
1996-03-31 95.44
1996-06-30 94.89
1996-09-30 95.4
1996-12-31 95.62
1997-03-31 94.99
1997-06-30 93.93
1997-09-30 92.14
1997-12-31 91.86
1998-03-31 91.27
1998-06-30 91.63
1998-09-30 92.27
1998-12-31 92.93
1999-03-31 92.1
1999-06-30 91.17
1999-09-30 90.86
1999-12-31 90.28
2000-03-31 89.49
2000-06-30 88.87
2000-09-30 88.7
2000-12-31 88.25
2001-03-31 89.62
2001-06-30 88.99
2001-09-30 89.28
2001-12-31 89.37