Frequencies for first 10,000 rows of vin_1 variable in vehicle dataset :

        vin |
character(1 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         18        0.18        0.18
          1 |      4,782       47.82       48.00
          2 |        967        9.67       57.67
          3 |        516        5.16       62.83
          4 |        525        5.25       68.08
          5 |        383        3.83       71.91
          6 |         13        0.13       72.04
          8 |          3        0.03       72.07
          9 |        336        3.36       75.43
          A |         12        0.12       75.55
          B |          2        0.02       75.57
          C |         15        0.15       75.72
          D |          3        0.03       75.75
          E |          2        0.02       75.77
          F |         13        0.13       75.90
          G |          3        0.03       75.93
          J |      1,694       16.94       92.87
          K |        264        2.64       95.51
          L |         32        0.32       95.83
          M |          2        0.02       95.85
          N |          2        0.02       95.87
          P |          3        0.03       95.90
          R |          4        0.04       95.94
          S |         41        0.41       96.35
          T |          2        0.02       96.37
          U |          1        0.01       96.38
          V |          6        0.06       96.44
          W |        266        2.66       99.10
          X |          1        0.01       99.11
          Y |         62        0.62       99.73
          Z |         27        0.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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