Year 2010 = 100 1979 31.4161985874553 1980 34.0885492367855 1981 40.0763888659404 1982 44.9065795001254 1983 48.2043267328786 1984 54.7909503249046 1985 60.03363657812 1986 64.6974983338282 1987 65.3650315665599 1988 68.1615744452134 1989 70.749651796037 1990 73.9764320406371 1991 78.7334379682435 1992 80.951156349412 1993 84.5616018739543 1994 86.5331535148131 1995 92.1572873294563 1996 96.2401068691875 1997 94.9893137022085 1998 97.6490144858703 1999 96.0104488245073 2000 100 2001 99.5962954167656 2002 101.781049631916 2003 97.1740679173593