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

    Vehicle |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,846       68.46       68.46
          2 |      2,675       26.75       95.21
          3 |        341        3.41       98.62
          4 |         74        0.74       99.36
          5 |         19        0.19       99.55
          6 |          9        0.09       99.64
          7 |          6        0.06       99.70
          8 |          4        0.04       99.74
          9 |          2        0.02       99.76
         10 |          2        0.02       99.78
         11 |          1        0.01       99.79
         12 |          1        0.01       99.80
         13 |          1        0.01       99.81
         14 |          1        0.01       99.82
         15 |          1        0.01       99.83
         16 |          1        0.01       99.84
         17 |          1        0.01       99.85
         18 |          1        0.01       99.86
         19 |          1        0.01       99.87
         20 |          1        0.01       99.88
         21 |          1        0.01       99.89
         22 |          1        0.01       99.90
         23 |          1        0.01       99.91
         24 |          1        0.01       99.92
         25 |          1        0.01       99.93
         26 |          1        0.01       99.94
         27 |          1        0.01       99.95
         28 |          1        0.01       99.96
         29 |          1        0.01       99.97
         30 |          1        0.01       99.98
         31 |          1        0.01       99.99
         32 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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