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 |      9,047       90.47       90.47
          1 |        923        9.23       99.70
          2 |         29        0.29       99.99
          5 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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