Frequencies for v_config variable in vehnit dataset :

    VEHICLE |
CONFIGURATI |
         ON |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,228       82.92       82.92
          1 |         53        3.58       86.50
          2 |         31        2.09       88.59
          3 |         14        0.95       89.53
          4 |          5        0.34       89.87
          5 |          5        0.34       90.21
          6 |        113        7.63       97.84
          7 |          6        0.41       98.24
         19 |          6        0.41       98.65
         21 |          8        0.54       99.19
         99 |         12        0.81      100.00
------------+-----------------------------------
      Total |      1,481      100.00

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