Quarter 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