Year 2010 = 100 1963 0.0477900049902457 1964 0.0511523624165794 1965 0.059360137278825 1966 0.0597865642024722 1967 0.0621413465079079 1968 0.0737794052090641 1969 0.0794286185281055 1970 0.0862891862057758 1971 0.0825117229244571 1972 0.0979498870445207 1973 0.123486444512247 1974 0.157370403357041 1975 0.195888453020492 1976 0.263814865672935 1977 0.44592557799387 1978 0.656736894987871 1979 1.09077112423635 1980 1.56241174389268 1981 2.33531225196282 1982 3.18119591294232 1983 7.2702591422105 1984 13.3977968303584 1985 20.6233519333847 1986 33.729662077597 1987 47.6785114409639 1988 64.23714024954 1989 81.4960951783554 1990 100