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

    VEHICLE |
CONFIGURATI |
         ON |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,241       92.41       92.41
          1 |         52        0.52       92.93
          2 |         42        0.42       93.35
          3 |         16        0.16       93.51
          4 |         22        0.22       93.73
          5 |        505        5.05       98.78
          6 |         43        0.43       99.21
          7 |         52        0.52       99.73
          9 |         27        0.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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