Frequencies for first 10,000 rows of vin_4 variable in vehicle dataset :

      vin_4 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          2        0.02        0.02
          0 |        628        6.28        6.30
          1 |      1,343       13.43       19.73
          2 |      1,098       10.98       30.71
          3 |      1,062       10.62       41.33
          4 |        620        6.20       47.53
          5 |        721        7.21       54.74
          6 |        445        4.45       59.19
          7 |      1,111       11.11       70.30
          8 |        411        4.11       74.41
          9 |      1,420       14.20       88.61
          A |        179        1.79       90.40
          B |        138        1.38       91.78
          C |         98        0.98       92.76
          D |         35        0.35       93.11
          E |         26        0.26       93.37
          F |         37        0.37       93.74
          G |        108        1.08       94.82
          H |        106        1.06       95.88
          I |          2        0.02       95.90
          J |         58        0.58       96.48
          K |          6        0.06       96.54
          L |         62        0.62       97.16
          M |         16        0.16       97.32
          N |          2        0.02       97.34
          P |          4        0.04       97.38
          Q |          4        0.04       97.42
          R |         12        0.12       97.54
          S |         51        0.51       98.05
          T |         19        0.19       98.24
          U |          8        0.08       98.32
          V |         13        0.13       98.45
          X |          1        0.01       98.46
          Y |        151        1.51       99.97
          Z |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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