Frequencies for v_config variable in vehnit dataset :

    VEHICLE |
CONFIGURATI |
         ON |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,167       83.78       83.78
          1 |         43        3.09       86.86
          2 |         27        1.94       88.80
          3 |         16        1.15       89.95
          4 |          3        0.22       90.17
          5 |          9        0.65       90.81
          6 |        108        7.75       98.56
          8 |          1        0.07       98.64
         19 |          4        0.29       98.92
         21 |          6        0.43       99.35
         99 |          9        0.65      100.00
------------+-----------------------------------
      Total |      1,393      100.00

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