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

    VEHICLE |
CONFIGURATI |
         ON |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,084       90.84       90.84
          1 |        118        1.18       92.02
          2 |         69        0.69       92.71
          3 |         22        0.22       92.93
          4 |         30        0.30       93.23
          5 |         12        0.12       93.35
          6 |        430        4.30       97.65
          7 |         52        0.52       98.17
         19 |         12        0.12       98.29
         20 |          5        0.05       98.34
         21 |         38        0.38       98.72
         70 |          1        0.01       98.73
         99 |        127        1.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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