Frequencies for first 10,000 rows of vin_10 variable in vehicle dataset :

     vin_10 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,105       81.05       81.05
          0 |         23        0.23       81.28
          9 |        716        7.16       88.44
          A |          9        0.09       88.53
          B |        697        6.97       95.50
          C |        435        4.35       99.85
          D |         15        0.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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