Frequencies for first 10,000 rows of v_config variable in vehicle dataset :

    VEHICLE |
CONFIGURATI |
         ON |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,070       90.70       90.70
          1 |        111        1.11       91.81
          2 |         77        0.77       92.58
          3 |         21        0.21       92.79
          4 |         25        0.25       93.04
          5 |         18        0.18       93.22
          6 |        435        4.35       97.57
          7 |         58        0.58       98.15
         19 |          5        0.05       98.20
         20 |          7        0.07       98.27
         21 |         48        0.48       98.75
         99 |        125        1.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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