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

    VEHICLE |
CONFIGURATI |
         ON |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,164       91.64       91.64
          1 |         74        0.74       92.38
          2 |         47        0.47       92.85
          3 |         26        0.26       93.11
          4 |         18        0.18       93.29
          5 |         12        0.12       93.41
          6 |        428        4.28       97.69
          7 |         68        0.68       98.37
         19 |          5        0.05       98.42
         20 |          4        0.04       98.46
         21 |         47        0.47       98.93
         70 |          2        0.02       98.95
         99 |        105        1.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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