Quarterly 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