Quarterly Average 1990 = 100
1975-03-31 77.56
1975-06-30 78.26
1975-09-30 76.49
1975-12-31 76.94
1976-03-31 78.74
1976-06-30 78.87
1976-09-30 82
1976-12-31 82.89
1977-03-31 82.88
1977-06-30 83.51
1977-09-30 83.33
1977-12-31 84.28
1978-03-31 84.76
1978-06-30 83.54
1978-09-30 83.22
1978-12-31 84.59
1979-03-31 84.3
1979-06-30 84.37
1979-09-30 87.22
1979-12-31 87.83
1980-03-31 87.02
1980-06-30 88.56
1980-09-30 88.04
1980-12-31 86.57
1981-03-31 86.67
1981-06-30 86.15
1981-09-30 87.77
1981-12-31 88.58
1982-03-31 88.97
1982-06-30 90.04
1982-09-30 90.2
1982-12-31 91.91
1983-03-31 93.06
1983-06-30 91.86
1983-09-30 91.88
1983-12-31 91.05
1984-03-31 92.74
1984-06-30 92.46
1984-09-30 91.7
1984-12-31 91.3
1985-03-31 92
1985-06-30 91.32
1985-09-30 93.08
1985-12-31 94.33
1986-03-31 94.86
1986-06-30 95.2
1986-09-30 96.81
1986-12-31 97.93
1987-03-31 98.41
1987-06-30 98.47
1987-09-30 98.07
1987-12-31 99.24
1988-03-31 98.68
1988-06-30 97.88
1988-09-30 97.76
1988-12-31 97.9
1989-03-31 97.47
1989-06-30 97.12
1989-09-30 98.05
1989-12-31 100.51
1990-03-31 99.99
1990-06-30 99.68
1990-09-30 99.83
1990-12-31 100.78
1991-03-31 99.19
1991-06-30 98.67
1991-09-30 99.53
1991-12-31 100.71
1992-03-31 100.33
1992-06-30 100.57
1992-09-30 103.76
1992-12-31 103.79
1993-03-31 105.03
1993-06-30 102.45
1993-09-30 104.8
1993-12-31 103.69
1994-03-31 103.2
1994-06-30 104.13
1994-09-30 104.28
1994-12-31 105.13
1995-03-31 107.48
1995-06-30 107.64
1995-09-30 106.92
1995-12-31 106.61
1996-03-31 105.96
1996-06-30 104.81
1996-09-30 104.71
1996-12-31 104.5
1997-03-31 103.86
1997-06-30 102.49
1997-09-30 102.44
1997-12-31 102.54
1998-03-31 102.28
1998-06-30 103
1998-09-30 104.07
1998-12-31 103.52
1999-03-31 102.39
1999-06-30 101.9
1999-09-30 101.63
1999-12-31 100.64
2000-03-31 99.98
2000-06-30 100.33
2000-09-30 99.25
2000-12-31 100.35
2001-03-31 100.28
2001-06-30 99.67
2001-09-30 100.24
2001-12-31 100.3