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

    vehicle |
     number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,709       67.09       67.09
          2 |      2,590       25.90       92.99
          3 |        467        4.67       97.66
          4 |        138        1.38       99.04
          5 |         53        0.53       99.57
          6 |         22        0.22       99.79
          7 |          9        0.09       99.88
          8 |          3        0.03       99.91
          9 |          1        0.01       99.92
         10 |          1        0.01       99.93
         11 |          1        0.01       99.94
         12 |          1        0.01       99.95
         13 |          1        0.01       99.96
         14 |          1        0.01       99.97
         15 |          1        0.01       99.98
         16 |          1        0.01       99.99
         17 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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