Quarterly Average 1990 = 100
1975-03-31 196.03
1975-06-30 198.31
1975-09-30 199.83
1975-12-31 198.95
1976-03-31 178.6
1976-06-30 161.37
1976-09-30 166.06
1976-12-31 159.68
1977-03-31 155.28
1977-06-30 153.69
1977-09-30 153.76
1977-12-31 150.5
1978-03-31 146.05
1978-06-30 145.5
1978-09-30 143.32
1978-12-31 138.63
1979-03-31 136.87
1979-06-30 137.56
1979-09-30 137.92
1979-12-31 136.1
1980-03-31 135.72
1980-06-30 133.02
1980-09-30 131.51
1980-12-31 128.7
1981-03-31 124.83
1981-06-30 119.78
1981-09-30 119.03
1981-12-31 115.13
1982-03-31 113.85
1982-06-30 112.29
1982-09-30 112.07
1982-12-31 111.17
1983-03-31 112.38
1983-06-30 110.42
1983-09-30 108.98
1983-12-31 107.24
1984-03-31 105.91
1984-06-30 105.65
1984-09-30 105.08
1984-12-31 104.03
1985-03-31 103.22
1985-06-30 100.68
1985-09-30 97.82
1985-12-31 97.81
1986-03-31 99.75
1986-06-30 100
1986-09-30 101.87
1986-12-31 103.47
1987-03-31 102.87
1987-06-30 100.91
1987-09-30 100.06
1987-12-31 99.87
1988-03-31 99.15
1988-06-30 97.52
1988-09-30 96.55
1988-12-31 97.17
1989-03-31 97.33
1989-06-30 97.99
1989-09-30 99.4
1989-12-31 99.19
1990-03-31 100.07
1990-06-30 100.81
1990-09-30 99.99
1990-12-31 99.17
1991-03-31 99.47
1991-06-30 98.39
1991-09-30 98.01
1991-12-31 98.51
1992-03-31 98.73
1992-06-30 98.31
1992-09-30 97.75
1992-12-31 87.33
1993-03-31 80.88
1993-06-30 82
1993-09-30 80.78
1993-12-31 78.01
1994-03-31 77.23
1994-06-30 78.8
1994-09-30 76.54
1994-12-31 74.91
1995-03-31 70.63
1995-06-30 66.39
1995-09-30 69.86
1995-12-31 70.26
1996-03-31 73.14
1996-06-30 75.85
1996-09-30 76.55
1996-12-31 77.45
1997-03-31 76.92
1997-06-30 76.23
1997-09-30 75.97
1997-12-31 76.11
1998-03-31 75.27
1998-06-30 75.77
1998-09-30 76.27
1998-12-31 76.52
1999-03-31 75.6
1999-06-30 74.72
1999-09-30 74.38
1999-12-31 73.79
2000-03-31 73.05
2000-06-30 72.3
2000-09-30 72.01
2000-12-31 71.48
2001-03-31 72.85
2001-06-30 72.18
2001-09-30 72.41
2001-12-31 72.49