Frequencies for first 10,000 rows of vnumber1 variable in vevent dataset :

    vehicle |
     number |
      (this |
   vehicle) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      8,303       83.03       83.03
          2 |      1,421       14.21       97.24
          3 |        208        2.08       99.32
          4 |         53        0.53       99.85
          5 |         11        0.11       99.96
          6 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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