Year Average 1990 = 100 1975-12-31 130.84 1976-12-31 119.75 1977-12-31 119.01 1978-12-31 121.16 1979-12-31 122.08 1980-12-31 117.54 1981-12-31 108.54 1982-12-31 103.18 1983-12-31 95.1 1984-12-31 94.18 1985-12-31 100.08 1986-12-31 98.99 1987-12-31 99.18 1988-12-31 95.39 1989-12-31 99.14 1990-12-31 100.2 1991-12-31 99.69 1992-12-31 104.75 1993-12-31 105.62 1994-12-31 107.12 1995-12-31 111.07 1996-12-31 108.08 1997-12-31 105.53 1998-12-31 107.09 1999-12-31 102.51 2000-12-31 102.02 2001-12-31 101.59