Quarterly Average 1990 = 100
1975-03-31 103.53
1975-06-30 102.31
1975-09-30 103.11
1975-12-31 102.48
1976-03-31 104.33
1976-06-30 105.76
1976-09-30 105.4
1976-12-31 105.26
1977-03-31 105.57
1977-06-30 99.06
1977-09-30 98.76
1977-12-31 95.74
1978-03-31 92.62
1978-06-30 89.41
1978-09-30 88.41
1978-12-31 88.33
1979-03-31 88.53
1979-06-30 89.17
1979-09-30 89.71
1979-12-31 91.22
1980-03-31 91.5
1980-06-30 93.09
1980-09-30 93.07
1980-12-31 93.52
1981-03-31 94.06
1981-06-30 94.89
1981-09-30 95.88
1981-12-31 96.52
1982-03-31 97.79
1982-06-30 98.46
1982-09-30 99.67
1982-12-31 91.82
1983-03-31 91.47
1983-06-30 92.33
1983-09-30 93.24
1983-12-31 93.27
1984-03-31 93.77
1984-06-30 94.74
1984-09-30 94.92
1984-12-31 94.93
1985-03-31 94.58
1985-06-30 94.92
1985-09-30 95.07
1985-12-31 95.1
1986-03-31 94.57
1986-06-30 93.54
1986-09-30 92.44
1986-12-31 92.41
1987-03-31 93.21
1987-06-30 94.13
1987-09-30 94.42
1987-12-31 94.78
1988-03-31 95.53
1988-06-30 95.96
1988-09-30 95.13
1988-12-31 95.97
1989-03-31 96.93
1989-06-30 100.21
1989-09-30 99.7
1989-12-31 99.39
1990-03-31 100.07
1990-06-30 100.12
1990-09-30 100.17
1990-12-31 99.66
1991-03-31 98.75
1991-06-30 98.48
1991-09-30 96.13
1991-12-31 91.74
1992-03-31 86.47
1992-06-30 86.35
1992-09-30 84.74
1992-12-31 77.68
1993-03-31 72.21
1993-06-30 73.52
1993-09-30 73.3
1993-12-31 74.44
1994-03-31 77.07
1994-06-30 77.12
1994-09-30 79.03
1994-12-31 83.63
1995-03-31 85.18
1995-06-30 87.46
1995-09-30 88.37
1995-12-31 88
1996-03-31 84.76
1996-06-30 82.76
1996-09-30 85
1996-12-31 84.61
1997-03-31 83.77
1997-06-30 82.42
1997-09-30 81.28
1997-12-31 81.21
1998-03-31 80.35
1998-06-30 80.69
1998-09-30 81.78
1998-12-31 83.05
1999-03-31 81.48
1999-06-30 80.26
1999-09-30 79.59
1999-12-31 78.78
2000-03-31 77.68
2000-06-30 76.65
2000-09-30 76.5
2000-12-31 76.18
2001-03-31 78.31
2001-06-30 77.65
2001-09-30 78.3
2001-12-31 78.51