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

 TRUCK FUEL |
       CODE |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          5        0.05        0.05
          * |      6,344       63.44       63.49
          9 |        569        5.69       69.18
          C |          2        0.02       69.20
          D |        896        8.96       78.16
          F |         46        0.46       78.62
          G |      2,133       21.33       99.95
          N |          2        0.02       99.97
          P |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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