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

      vin_8 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        388        3.88        3.88
          0 |      1,385       13.85       17.73
          1 |      2,433       24.33       42.06
          2 |      1,044       10.44       52.50
          3 |        672        6.72       59.22
          4 |        787        7.87       67.09
          5 |        792        7.92       75.01
          6 |        441        4.41       79.42
          7 |        413        4.13       83.55
          8 |        412        4.12       87.67
          9 |        945        9.45       97.12
          A |         53        0.53       97.65
          B |         33        0.33       97.98
          C |          6        0.06       98.04
          D |          9        0.09       98.13
          E |          5        0.05       98.18
          F |          5        0.05       98.23
          G |          3        0.03       98.26
          H |        105        1.05       99.31
          J |          9        0.09       99.40
          K |          2        0.02       99.42
          L |          9        0.09       99.51
          M |          6        0.06       99.57
          N |          3        0.03       99.60
          O |          2        0.02       99.62
          P |          4        0.04       99.66
          R |          1        0.01       99.67
          S |          4        0.04       99.71
          T |         21        0.21       99.92
          U |          5        0.05       99.97
          Z |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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