Frequencies for first 10,000 rows of vin_6 variable in vehicle dataset :

      vin_6 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          5        0.05        0.05
          0 |        417        4.17        4.22
          1 |      2,567       25.67       29.89
          2 |      1,154       11.54       41.43
          3 |        869        8.69       50.12
          4 |        724        7.24       57.36
          5 |      1,439       14.39       71.75
          6 |        565        5.65       77.40
          7 |        442        4.42       81.82
          8 |        302        3.02       84.84
          9 |        649        6.49       91.33
          A |        121        1.21       92.54
          B |        182        1.82       94.36
          C |         62        0.62       94.98
          D |         53        0.53       95.51
          E |         28        0.28       95.79
          F |         16        0.16       95.95
          G |         19        0.19       96.14
          H |         34        0.34       96.48
          J |         40        0.40       96.88
          K |          7        0.07       96.95
          L |         23        0.23       97.18
          M |         46        0.46       97.64
          N |         10        0.10       97.74
          P |         17        0.17       97.91
          R |         40        0.40       98.31
          S |         47        0.47       98.78
          T |         11        0.11       98.89
          U |         24        0.24       99.13
          V |         13        0.13       99.26
          W |         24        0.24       99.50
          X |         19        0.19       99.69
          Y |          5        0.05       99.74
          Z |         26        0.26      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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