Frequencies for first 10,000 rows of vin_8 variable in vehicle dataset :

      vin_8 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        409        4.09        4.09
          0 |      1,282       12.82       16.91
          1 |      2,315       23.15       40.06
          2 |        972        9.72       49.78
          3 |        642        6.42       56.20
          4 |        735        7.35       63.55
          5 |        652        6.52       70.07
          6 |        399        3.99       74.06
          7 |        375        3.75       77.81
          8 |        401        4.01       81.82
          9 |      1,595       15.95       97.77
          A |         46        0.46       98.23
          B |         37        0.37       98.60
          C |          2        0.02       98.62
          D |          7        0.07       98.69
          E |          4        0.04       98.73
          F |         11        0.11       98.84
          G |          1        0.01       98.85
          H |         79        0.79       99.64
          J |          1        0.01       99.65
          L |         12        0.12       99.77
          M |          1        0.01       99.78
          N |          3        0.03       99.81
          O |          2        0.02       99.83
          P |          2        0.02       99.85
          R |          1        0.01       99.86
          S |          2        0.02       99.88
          T |          7        0.07       99.95
          X |          1        0.01       99.96
          Y |          2        0.02       99.98
          Z |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016