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

     veh_no |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,303       13.03       13.03
          1 |      5,795       57.95       70.98
          2 |      2,365       23.65       94.63
          3 |        396        3.96       98.59
          4 |         89        0.89       99.48
          5 |         28        0.28       99.76
          6 |         10        0.10       99.86
          7 |          7        0.07       99.93
          8 |          4        0.04       99.97
          9 |          2        0.02       99.99
         10 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016