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

     vin_10 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         59        0.59        0.59
          0 |         56        0.56        1.15
          1 |        691        6.91        8.06
          2 |         88        0.88        8.94
          3 |         37        0.37        9.31
          4 |         33        0.33        9.64
          5 |         42        0.42       10.06
          6 |         32        0.32       10.38
          7 |         30        0.30       10.68
          8 |         41        0.41       11.09
          9 |        427        4.27       15.36
          A |          1        0.01       15.37
          B |         72        0.72       16.09
          C |         63        0.63       16.72
          D |        102        1.02       17.74
          E |        187        1.87       19.61
          F |        227        2.27       21.88
          G |        286        2.86       24.74
          H |        296        2.96       27.70
          J |        415        4.15       31.85
          K |        437        4.37       36.22
          L |        459        4.59       40.81
          M |        444        4.44       45.25
          N |        417        4.17       49.42
          P |        504        5.04       54.46
          R |        601        6.01       60.47
          S |        631        6.31       66.78
          T |        572        5.72       72.50
          U |          2        0.02       72.52
          V |        644        6.44       78.96
          W |        606        6.06       85.02
          X |        663        6.63       91.65
          Y |        835        8.35      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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