Jahr Einwohner 1871 16.176 1880 19.378 1890 20.913 1900 23.425 1910 28.499 1925 29.971 1933 34.112 1939 35.963 1950 44.221 1956 51.454 1961 58.768 1962 61.068 1963 61.484 1964 62.454 1965 63.450

Jahr Einwohner 1966 64.886 1967 65.846 1968 67.054 1969 67.947 1970 66.788 1971 68.231 1972 69.650 1973 70.993 1974 71.175 1975 71.348 1976 71.558 1977 71.820 1978 71.193 1979 72.167 1980 73.132

Jahr Einwohner 1981 74.500 1982 74.766 1983 75.013 1984 75.333 1985 75.825 1986 76.122 1987¹ 71.701 1987 72.936 1988 76.046 1989 78.643 2001 82.444 2002 82.885 2003 83.137 2004