Frequencies for first 10,000 rows of vin_1 variable in vehicle dataset :

      vin_1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          2        0.02        0.02
          0 |          9        0.09        0.11
          1 |      5,286       52.86       52.97
          2 |        980        9.80       62.77
          3 |        417        4.17       66.94
          4 |        491        4.91       71.85
          5 |        103        1.03       72.88
          6 |         18        0.18       73.06
          7 |          6        0.06       73.12
          8 |          5        0.05       73.17
          9 |        408        4.08       77.25
          A |          3        0.03       77.28
          B |          5        0.05       77.33
          C |         66        0.66       77.99
          D |          8        0.08       78.07
          E |          8        0.08       78.15
          F |         34        0.34       78.49
          G |          6        0.06       78.55
          H |          3        0.03       78.58
          J |      1,677       16.77       95.35
          K |        186        1.86       97.21
          L |          2        0.02       97.23
          M |          2        0.02       97.25
          P |          4        0.04       97.29
          R |          7        0.07       97.36
          S |         32        0.32       97.68
          T |          6        0.06       97.74
          U |          6        0.06       97.80
          V |          3        0.03       97.83
          W |        167        1.67       99.50
          X |          1        0.01       99.51
          Y |         39        0.39       99.90
          Z |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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