Frequencies for first 10,000 rows of n_mot_no variable in person dataset :

  Number Of |
      Motor |
    Vehicle |
   striking |
Non-Motoris |
          t |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,130       91.30       91.30
          1 |        846        8.46       99.76
          2 |         23        0.23       99.99
          5 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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