Frequencies for man_coll variable in vehnit dataset :

  MANNER OF |
  COLLISION |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        442       34.75       34.75
          1 |        320       25.16       59.91
          2 |         56        4.40       64.31
          3 |         50        3.93       68.24
          4 |         74        5.82       74.06
          5 |        138       10.85       84.91
          6 |         17        1.34       86.24
          7 |         88        6.92       93.16
          8 |         23        1.81       94.97
          9 |         36        2.83       97.80
         10 |          1        0.08       97.88
         11 |         24        1.89       99.76
         99 |          3        0.24      100.00
------------+-----------------------------------
      Total |      1,272      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016