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

    VEHICLE |
CONFIGURATI |
         ON |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,101       91.01       91.01
          1 |        105        1.05       92.06
          2 |         74        0.74       92.80
          3 |         37        0.37       93.17
          4 |         28        0.28       93.45
          5 |         14        0.14       93.59
          6 |        432        4.32       97.91
          7 |         49        0.49       98.40
         19 |          8        0.08       98.48
         20 |          5        0.05       98.53
         21 |         55        0.55       99.08
         99 |         92        0.92      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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