4% Est. 2006 2.454350 0.407440 4% Est. 1993 0.513373 1.947900 3.8744% 1988 0.456939 2.188477 3.3218% 1987 1.248941 0.800678 3.1640% 1986 15.804676 0.063272 2.6144% 1985 15.402005 0.064927 2.9715% 1984 0.390103 2.563425 3.6576% 1983 0.936875 1.067378 3.8998% 1982 4.237240 0.236003 6.3831% 1981 11.324964 0.088301 9.6843% 1980 10.202853 0.098012 9.0330% 1979 2.325443 0.430026 8.8650% 1978 2.787599 0.358732 7.2813% 1977 3.045235 0.328382 6.6558% 1976 0.736284 1.358172 6.4073% 1975 2.325505 0.430014 9.8159% 1974 3.673478 0.272222 9.0909% 1973 6.187293 0.161622 6.4509% 1972 1.457701 0.686012 4.7304% 1971 6.627172 0.150894 5.7132% 1970 0.333336 2.999976 5.5272% 1969 5.038071 0.198489 5.5714% 1968 2.386116 0.419091 5.0148% 1967 4.985808 0.200569 2.5719% 1966 0.148306 6.742799 3.5485% 1965 0.137715 7.261347 2.7360% 1964 4.506982 0.221878 1.5423% 1963 4.836117 0.206777 1.5697% 1962 2.018996 0.495296 2.2421% 1961 0.827588 1.208331 0.9709% 1960 0.263203 3.799355 1.6442% 1959 3.576519 0.279601 2.3579% 1958 0.209549 4.772156 2.0623% 1957 0.109619 9.122494 3.5571% 1956 0.281002 3.558690 3.3098% 1955 0.129648 7.713211 3.4226% 1954 0.865119 1.155910 1.5421% 1953 1.000000
heightening