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

       Fuel |
 Code-Truck |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          9        0.09        0.09
          * |      6,191       61.91       62.00
          9 |        934        9.34       71.34
          D |        530        5.30       76.64
          G |      2,336       23.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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