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

     veh_no |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,271       12.71       12.71
          1 |      5,962       59.62       72.33
          2 |      2,332       23.32       95.65
          3 |        342        3.42       99.07
          4 |         63        0.63       99.70
          5 |         19        0.19       99.89
          6 |          8        0.08       99.97
          7 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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