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

     veh_no |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,331       13.31       13.31
          1 |      5,749       57.49       70.80
          2 |      2,395       23.95       94.75
          3 |        384        3.84       98.59
          4 |         82        0.82       99.41
          5 |         30        0.30       99.71
          6 |         14        0.14       99.85
          7 |          6        0.06       99.91
          8 |          5        0.05       99.96
          9 |          3        0.03       99.99
         10 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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