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

    Vehicle |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,875       68.75       68.75
          2 |      2,642       26.42       95.17
          3 |        354        3.54       98.71
          4 |         76        0.76       99.47
          5 |         21        0.21       99.68
          6 |          6        0.06       99.74
          7 |          3        0.03       99.77
          8 |          2        0.02       99.79
          9 |          2        0.02       99.81
         10 |          1        0.01       99.82
         11 |          1        0.01       99.83
         12 |          1        0.01       99.84
         13 |          1        0.01       99.85
         14 |          1        0.01       99.86
         15 |          1        0.01       99.87
         16 |          1        0.01       99.88
         17 |          1        0.01       99.89
         18 |          1        0.01       99.90
         19 |          1        0.01       99.91
         20 |          1        0.01       99.92
         21 |          1        0.01       99.93
         22 |          1        0.01       99.94
         23 |          1        0.01       99.95
         24 |          1        0.01       99.96
         25 |          1        0.01       99.97
         26 |          1        0.01       99.98
         27 |          1        0.01       99.99
         28 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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