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

    vehicle |
     number |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,514       15.14       15.14
          1 |      5,741       57.41       72.55
          2 |      2,145       21.45       94.00
          3 |        390        3.90       97.90
          4 |        124        1.24       99.14
          5 |         48        0.48       99.62
          6 |         19        0.19       99.81
          7 |          7        0.07       99.88
          8 |          3        0.03       99.91
          9 |          1        0.01       99.92
         10 |          1        0.01       99.93
         11 |          1        0.01       99.94
         12 |          1        0.01       99.95
         13 |          1        0.01       99.96
         14 |          1        0.01       99.97
         15 |          1        0.01       99.98
         16 |          1        0.01       99.99
         17 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016