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

    vehicle |
     number |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,551       15.51       15.51
          1 |      5,688       56.88       72.39
          2 |      2,184       21.84       94.23
          3 |        409        4.09       98.32
          4 |        102        1.02       99.34
          5 |         32        0.32       99.66
          6 |         16        0.16       99.82
          7 |          6        0.06       99.88
          8 |          3        0.03       99.91
          9 |          3        0.03       99.94
         10 |          2        0.02       99.96
         11 |          2        0.02       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