Frequencies for first 10,000 rows of vin_3 variable in vehicle dataset :

      vin_3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        516        5.16        5.16
          1 |      1,179       11.79       16.95
          2 |      1,142       11.42       28.37
          3 |        828        8.28       36.65
          4 |      1,039       10.39       47.04
          5 |        504        5.04       52.08
          6 |        706        7.06       59.14
          7 |        292        2.92       62.06
          8 |        422        4.22       66.28
          9 |        725        7.25       73.53
          A |        595        5.95       79.48
          B |        123        1.23       80.71
          C |        287        2.87       83.58
          D |        112        1.12       84.70
          E |        144        1.44       86.14
          F |         80        0.80       86.94
          G |         20        0.20       87.14
          H |         21        0.21       87.35
          J |         10        0.10       87.45
          K |         44        0.44       87.89
          L |        170        1.70       89.59
          M |        194        1.94       91.53
          N |         50        0.50       92.03
          P |         52        0.52       92.55
          Q |          7        0.07       92.62
          R |         29        0.29       92.91
          S |         86        0.86       93.77
          T |        341        3.41       97.18
          U |         97        0.97       98.15
          V |         28        0.28       98.43
          W |         57        0.57       99.00
          X |          8        0.08       99.08
          Y |         76        0.76       99.84
          Z |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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