Quarterly Average 1990 = 100
1975-03-31 76.99
1975-06-30 76.49
1975-09-30 75.1
1975-12-31 75.42
1976-03-31 76.09
1976-06-30 76.9
1976-09-30 78.26
1976-12-31 82.03
1977-03-31 82.08
1977-06-30 82.7
1977-09-30 82.66
1977-12-31 82.47
1978-03-31 84.66
1978-06-30 84.71
1978-09-30 83.2
1978-12-31 85.42
1979-03-31 86.4
1979-06-30 85.02
1979-09-30 84.76
1979-12-31 85.9
1980-03-31 86.22
1980-06-30 85.52
1980-09-30 86.03
1980-12-31 84.43
1981-03-31 82.12
1981-06-30 80.66
1981-09-30 80.73
1981-12-31 84.51
1982-03-31 84.61
1982-06-30 85.45
1982-09-30 86.65
1982-12-31 88.47
1983-03-31 89.68
1983-06-30 88.23
1983-09-30 87.65
1983-12-31 87.72
1984-03-31 87.54
1984-06-30 87.79
1984-09-30 86.88
1984-12-31 86.49
1985-03-31 85.94
1985-06-30 86.23
1985-09-30 87.61
1985-12-31 89.2
1986-03-31 91.39
1986-06-30 92.23
1986-09-30 94.4
1986-12-31 96.35
1987-03-31 98.14
1987-06-30 97.67
1987-09-30 97.61
1987-12-31 98.66
1988-03-31 98.77
1988-06-30 97.89
1988-09-30 96.33
1988-12-31 96.87
1989-03-31 95.82
1989-06-30 95.96
1989-09-30 96.28
1989-12-31 98.32
1990-03-31 100.05
1990-06-30 100.01
1990-09-30 99.56
1990-12-31 100.39
1991-03-31 100.39
1991-06-30 98.36
1991-09-30 98.53
1991-12-31 99.72
1992-03-31 100.02
1992-06-30 99.8
1992-09-30 101.87
1992-12-31 104.44
1993-03-31 104.87
1993-06-30 104.3
1993-09-30 104.43
1993-12-31 105.18
1994-03-31 103.68
1994-06-30 104.4
1994-09-30 105.97
1994-12-31 106.17
1995-03-31 108.45
1995-06-30 110.06
1995-09-30 109.09
1995-12-31 109.54
1996-03-31 108.56
1996-06-30 107.07
1996-09-30 107.1
1996-12-31 105.71
1997-03-31 103.69
1997-06-30 102.61
1997-09-30 100.86
1997-12-31 101.55
1998-03-31 100.96
1998-06-30 101.69
1998-09-30 102.4
1998-12-31 103.25
1999-03-31 102.05
1999-06-30 100.76
1999-09-30 100.27
1999-12-31 99.39
2000-03-31 98.3
2000-06-30 97.37
2000-09-30 97.03
2000-12-31 96.35
2001-03-31 98.3
2001-06-30 97.37
2001-09-30 97.74
2001-12-31 97.92