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

    Vehicle |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,828       78.28       78.28
          2 |      1,784       17.84       96.12
          3 |        285        2.85       98.97
          4 |         64        0.64       99.61
          5 |         22        0.22       99.83
          6 |          9        0.09       99.92
          7 |          4        0.04       99.96
          8 |          2        0.02       99.98
          9 |          1        0.01       99.99
         10 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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