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

    vehicle |
     number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,688       66.88       66.88
          2 |      2,639       26.39       93.27
          3 |        470        4.70       97.97
          4 |        122        1.22       99.19
          5 |         38        0.38       99.57
          6 |         20        0.20       99.77
          7 |          7        0.07       99.84
          8 |          4        0.04       99.88
          9 |          4        0.04       99.92
         10 |          3        0.03       99.95
         11 |          3        0.03       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 Oct 2016