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

        vin |
character(1 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          3        0.03        0.03
          0 |         20        0.20        0.23
          1 |      4,486       44.86       45.09
          2 |        904        9.04       54.13
          3 |        656        6.56       60.69
          4 |        505        5.05       65.74
          5 |        502        5.02       70.76
          6 |          9        0.09       70.85
          8 |          6        0.06       70.91
          9 |        486        4.86       75.77
          A |          6        0.06       75.83
          B |          1        0.01       75.84
          C |          8        0.08       75.92
          D |          2        0.02       75.94
          E |          1        0.01       75.95
          F |          8        0.08       76.03
          G |          1        0.01       76.04
          I |          2        0.02       76.06
          J |      1,603       16.03       92.09
          K |        282        2.82       94.91
          L |         25        0.25       95.16
          M |         21        0.21       95.37
          R |          3        0.03       95.40
          S |         47        0.47       95.87
          T |          4        0.04       95.91
          U |          2        0.02       95.93
          V |         13        0.13       96.06
          W |        323        3.23       99.29
          X |          1        0.01       99.30
          Y |         48        0.48       99.78
          Z |         22        0.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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