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

    VEHICLE |
CONFIGURATI |
         ON |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,149       91.49       91.49
          1 |        102        1.02       92.51
          2 |         41        0.41       92.92
          3 |         22        0.22       93.14
          4 |         31        0.31       93.45
          5 |         23        0.23       93.68
          6 |        496        4.96       98.64
          7 |         17        0.17       98.81
          8 |         41        0.41       99.22
          9 |         78        0.78      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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