Quarterly Average 1990 = 100
1975-03-31 197.24
1975-06-30 198.72
1975-09-30 200.07
1975-12-31 199.19
1976-03-31 163.51
1976-06-30 166.24
1976-09-30 160.36
1976-12-31 155.29
1977-03-31 154.17
1977-06-30 153.02
1977-09-30 153.98
1977-12-31 145.02
1978-03-31 144.37
1978-06-30 145.06
1978-09-30 141.97
1978-12-31 136.21
1979-03-31 137.19
1979-06-30 136.79
1979-09-30 137.12
1979-12-31 136.35
1980-03-31 133.58
1980-06-30 131.65
1980-09-30 130.23
1980-12-31 127.57
1981-03-31 120.89
1981-06-30 119.04
1981-09-30 119.35
1981-12-31 114.76
1982-03-31 112.6
1982-06-30 111.92
1982-09-30 111.94
1982-12-31 112.82
1983-03-31 111.57
1983-06-30 110.44
1983-09-30 107.58
1983-12-31 106.92
1984-03-31 105.94
1984-06-30 106.01
1984-09-30 103.44
1984-12-31 104.65
1985-03-31 100.73
1985-06-30 100.86
1985-09-30 97.35
1985-12-31 98.66
1986-03-31 99.4
1986-06-30 100.16
1986-09-30 102.73
1986-12-31 104.1
1987-03-31 102.3
1987-06-30 100.24
1987-09-30 100.11
1987-12-31 100.06
1988-03-31 98.36
1988-06-30 97
1988-09-30 96.27
1988-12-31 97.63
1989-03-31 97.2
1989-06-30 99.14
1989-09-30 98.72
1989-12-31 99.46
1990-03-31 100.81
1990-06-30 100.33
1990-09-30 98.8
1990-12-31 99.5
1991-03-31 98.41
1991-06-30 97.77
1991-09-30 98.62
1991-12-31 99.07
1992-03-31 98.42
1992-06-30 98.66
1992-09-30 87.71
1992-12-31 83.91
1993-03-31 77.2
1993-06-30 82.99
1993-09-30 79.21
1993-12-31 76.82
1994-03-31 78.88
1994-06-30 77.05
1994-09-30 76.38
1994-12-31 73.81
1995-03-31 64.22
1995-06-30 66.96
1995-09-30 69.48
1995-12-31 70.95
1996-03-31 73.49
1996-06-30 76.8
1996-09-30 77.48
1996-12-31 77.94
1997-03-31 75.93
1997-06-30 76.43
1997-09-30 76.32
1997-12-31 75.67
1998-03-31 75.03
1998-06-30 75.81
1998-09-30 76.89
1998-12-31 76.36
1999-03-31 75.04
1999-06-30 74.4
1999-09-30 74.25
1999-12-31 73.17
2000-03-31 72.37
2000-06-30 72.82
2000-09-30 71.58
2000-12-31 72.8
2001-03-31 72.48
2001-06-30 71.78
2001-09-30 72.59
2001-12-31 72.52