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

      vin_8 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        461        4.61        4.61
          0 |      2,703       27.03       31.64
          1 |      2,079       20.79       52.43
          2 |        747        7.47       59.90
          3 |        469        4.69       64.59
          4 |        498        4.98       69.57
          5 |        466        4.66       74.23
          6 |        261        2.61       76.84
          7 |        236        2.36       79.20
          8 |        208        2.08       81.28
          9 |      1,723       17.23       98.51
          A |         29        0.29       98.80
          B |         18        0.18       98.98
          C |          6        0.06       99.04
          D |          8        0.08       99.12
          E |          3        0.03       99.15
          F |          4        0.04       99.19
          G |          4        0.04       99.23
          H |         33        0.33       99.56
          L |          5        0.05       99.61
          M |          1        0.01       99.62
          N |          4        0.04       99.66
          O |          2        0.02       99.68
          P |          2        0.02       99.70
          R |          1        0.01       99.71
          S |          5        0.05       99.76
          T |         15        0.15       99.91
          U |          2        0.02       99.93
          X |          1        0.01       99.94
          Y |          1        0.01       99.95
          Z |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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