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

    Vehicle |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,767       67.67       67.67
          2 |      2,774       27.74       95.41
          3 |        358        3.58       98.99
          4 |         61        0.61       99.60
          5 |         21        0.21       99.81
          6 |          6        0.06       99.87
          7 |          4        0.04       99.91
          8 |          2        0.02       99.93
          9 |          2        0.02       99.95
         10 |          2        0.02       99.97
         11 |          1        0.01       99.98
         12 |          1        0.01       99.99
         13 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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