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

Non-Motoris |
 t Striking |
    Vehicle |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,277       92.77       92.77
          1 |        705        7.05       99.82
          2 |         15        0.15       99.97
          3 |          1        0.01       99.98
         32 |          1        0.01       99.99
         35 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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