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

 Cargo Body |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,182       91.82       91.82
          1 |        304        3.04       94.86
          2 |         69        0.69       95.55
          3 |         85        0.85       96.40
          4 |         58        0.58       96.98
          5 |          8        0.08       97.06
          6 |          8        0.08       97.14
          7 |         19        0.19       97.33
          8 |         33        0.33       97.66
          9 |          8        0.08       97.74
         10 |         17        0.17       97.91
         11 |          3        0.03       97.94
         12 |          4        0.04       97.98
         22 |         56        0.56       98.54
         28 |          4        0.04       98.58
         96 |         43        0.43       99.01
         97 |         55        0.55       99.56
         98 |         21        0.21       99.77
         99 |         23        0.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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