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

 CARGO BODY |
       TYPE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,099       90.99       90.99
          1 |        336        3.36       94.35
          2 |         59        0.59       94.94
          3 |        140        1.40       96.34
          4 |         67        0.67       97.01
          5 |          5        0.05       97.06
          6 |          4        0.04       97.10
          7 |         16        0.16       97.26
          8 |         65        0.65       97.91
         97 |        113        1.13       99.04
         98 |         29        0.29       99.33
         99 |         67        0.67      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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