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

       Fuel |
 Code-Truck |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         16        0.16        0.16
          * |      6,016       60.16       60.32
          9 |      1,706       17.06       77.38
          D |        338        3.38       80.76
          G |      1,924       19.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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