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

  number of |
      motor |
    vehicle |
   striking |
non-motoris |
          t |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,986       89.86       89.86
          1 |        991        9.91       99.77
          2 |         18        0.18       99.95
          3 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016