1968   5
          50          47          28          43          36
  35.3        28.1        37.3        31.9        21.3      
  39.3        32.8        33.5        34.3        33.9      
  35.1        33.2        37.6        31.7        34.5      
  34.9        30.9        37.2        31.4        34.8      
  37.4        35.4        38.4        33.7        31.6      
  37.7        36.4        37.7        34.4        29.5      
  37.9        38.6        36.7        33.1        30.8      
  41.0        36.9        37.2        33.7        30.5      
  40.7        35.0        34.2        35.5        33.6      
  38.5        35.0        35.4        35.8        35.1      
  40.0        34.6        36.9        32.0        35.7      
  38.5        27.0        32.4        31.8        35.0      
  36.4        29.1        31.9        31.3        35.0      
  34.8        30.9        32.0        29.3        35.6      
  31.6        32.6        31.0        29.7        35.0      
  30.5        34.9        28.7        31.2        36.5      
  31.7        37.3        26.2        30.6        35.5      
  33.0        34.6        27.7        34.1        33.0      
  34.7        31.3        26.5        33.5        32.3      
  35.0        31.1        24.0        35.6        30.6      
  33.1        33.1        22.1        34.6        29.9      
  31.9        30.2        20.3        31.2        27.7      
  33.3        30.3        17.5        27.9        25.2      
  32.1        29.8        16.0        28.1        25.1      
  28.8        32.6        13.6        26.8        24.3      
  27.1        31.6        12.2        26.1        21.9      
  27.9        28.3        10.3        26.5        20.9      
  26.8        29.9        11.1        26.2        19.6      
  27.2        27.8         0.0        26.1        19.3      
  28.1        31.8         0.0        25.4        18.0      
  28.4        27.0         0.0        25.1        17.4      
  26.0        27.0         0.0        24.3        16.3      
  26.5        26.9         0.0        22.6        16.0      
  26.0        23.4         0.0        20.5        14.9      
  23.2        22.6         0.0        20.4        14.2      
  22.2        20.7         0.0        18.9        16.0      
  21.0        20.6         0.0        17.8         0.0      
  20.8        20.0         0.0        17.0         0.0      
  21.2        21.3         0.0        16.3         0.0      
  21.3        20.0         0.0        14.9         0.0      
  20.5        21.1         0.0        12.6         0.0      
  20.7        21.2         0.0        11.4         0.0      
  19.5        18.1         0.0        11.9         0.0      
  18.3        15.3         0.0         0.0         0.0      
  17.8        12.2         0.0         0.0         0.0      
  16.3        10.6         0.0         0.0         0.0      
  14.9        10.4         0.0         0.0         0.0      
  12.7         0.0         0.0         0.0         0.0      
  10.3         0.0         0.0         0.0         0.0      
  11.6         0.0         0.0         0.0         0.0