Frequencies for v_config variable in vehnit dataset :

    VEHICLE |
CONFIGURATI |
         ON |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,069       84.04       84.04
          1 |         53        4.17       88.21
          2 |         21        1.65       89.86
          3 |         12        0.94       90.80
          4 |          8        0.63       91.43
          5 |          8        0.63       92.06
          6 |         84        6.60       98.66
          7 |          3        0.24       98.90
         19 |          3        0.24       99.14
         20 |          2        0.16       99.29
         21 |          4        0.31       99.61
         70 |          1        0.08       99.69
         99 |          4        0.31      100.00
------------+-----------------------------------
      Total |      1,272      100.00

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