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

    vehicle |
configurati |
         on |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,201       92.01       92.01
          1 |        144        1.44       93.45
          2 |         72        0.72       94.17
          4 |         27        0.27       94.44
          5 |         16        0.16       94.60
          6 |        420        4.20       98.80
          7 |         41        0.41       99.21
          8 |          1        0.01       99.22
         10 |          1        0.01       99.23
         19 |          8        0.08       99.31
         20 |          5        0.05       99.36
         21 |         52        0.52       99.88
         99 |         12        0.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016