Time                                      HTL                         
spent                 Volks            Maschinen-                      AEC
with:                 Schule   Mittel     bau         Physik-       FutureLab
          Gnagna...  --------  Schule  ----------     Studium      -------...
        -------------        ----------          ------------------       ...
                                                                      
Year:   72  74  76  78  80  82  84  86  88  90  92  94  96  98  2K  02    ...
          73  75  77  79  81  83  85  87  89  91  93  95  97  99  01  03  ...