1968   6.3   3.3   3.3   8.2  54.7  57.8  23.2  70.9  85.7 207.3 139.0  51.1
  1969  24.9  12.6  20.0  29.9  27.5  36.4  49.9  49.1 160.9 102.1  36.3  28.2
  1970  28.4  11.9  10.9  50.5  63.0  54.2 186.1 124.0 116.6 178.1  92.5  40.7
  1971  25.3  43.5  20.1  27.7  90.9  37.2  35.0  34.1  99.4 176.1 148.6  45.9
  1972  36.9  20.7  16.5  16.0  22.8  17.0  37.5  45.4  87.0  59.1  26.7  12.4
  1973  10.4  56.7  34.6  65.3  72.1  76.6  73.7 102.1 163.6 133.1  79.4  35.6
  1974  55.9  23.4  16.4  57.0 147.8  57.9 187.4 117.7 147.2 231.7 135.7  42.2
  1975  27.4  17.1  20.8  22.0  79.4  44.2  96.4 127.7 184.9 182.5  93.2  62.6
  1976  25.8  15.3  14.2  10.6  12.0  17.3  16.5  31.7  52.1 138.8  43.5  37.5
  1977  31.2  15.2  17.9  16.1  18.8  32.9  33.0  47.8  49.2  63.5  28.8  13.1
  1978  11.1   6.5  11.3  20.2  35.5  62.6  67.4  87.3 122.3 110.9  92.2  73.7
  1979  24.5  10.0  10.2  13.2  13.6  19.9  27.2  46.3 134.0 135.1  45.0  19.7
  1980  11.5   5.6   6.9   6.4  14.2  15.1  39.4  57.9 108.1 105.9  56.0  32.7
  1981  15.6  11.8   9.3   6.7  13.3  46.6 144.6 127.3 149.0 147.6  63.3  35.9
  1982  20.3   9.9  13.5  10.9  25.3  26.9  15.4  20.5  39.4  24.0  11.2   7.0
  1983   5.0   2.3  11.8  31.9  50.9  44.3  48.9  89.9 147.2  93.1  60.1  50.1
  1984  44.9  26.0  19.5  22.8  19.1  19.6  29.9  93.0 134.8 135.9  35.7  16.3
  1985   9.7   5.8   7.7  13.0  17.5  30.9  21.2  86.8  70.0  74.4  43.7  44.2
  1986  19.8   9.8   6.6   8.1  19.6  13.5 124.3  77.8  71.4 173.6 101.7  73.1
  1987  28.8  14.3  14.2  17.9  39.9  74.4  53.7  51.8  65.0  74.2  35.5  34.5
  1988  13.3   7.4   6.8   6.6  20.0  59.6  65.3  63.0  89.8  66.6  47.4  96.2
  1989  35.1  13.2  23.1  62.0  48.1  71.8  59.5  63.0  70.2 122.8  85.0  29.8
  1990  14.3  10.6   8.5  20.4  35.4  30.6 103.6  87.3 104.6 175.0  73.4  21.9
  1991  22.7   9.2   7.2   6.6   6.6  45.5  72.7  78.6 121.0 148.0  53.7  26.8
  1992  23.3  16.5  12.3  11.5  23.9  37.4  35.6  56.2 105.0 211.0 104.7  76.0