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

 CARGO BODY |
       TYPE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,032       90.32       90.32
          1 |        318        3.18       93.50
          2 |         73        0.73       94.23
          3 |        132        1.32       95.55
          4 |         80        0.80       96.35
          5 |         15        0.15       96.50
          6 |          2        0.02       96.52
          7 |         19        0.19       96.71
          8 |         19        0.19       96.90
          9 |         16        0.16       97.06
         20 |          3        0.03       97.09
         21 |         56        0.56       97.65
         96 |         19        0.19       97.84
         97 |         56        0.56       98.40
         98 |         40        0.40       98.80
         99 |        120        1.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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