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

        VIN |
Character(1 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          1        0.01        0.01
          0 |         12        0.12        0.13
          1 |      4,954       49.54       49.67
          2 |      1,002       10.02       59.69
          3 |        470        4.70       64.39
          4 |        554        5.54       69.93
          5 |        341        3.41       73.34
          6 |         12        0.12       73.46
          7 |          1        0.01       73.47
          9 |        367        3.67       77.14
          A |          4        0.04       77.18
          B |          2        0.02       77.20
          C |         28        0.28       77.48
          D |          1        0.01       77.49
          E |          1        0.01       77.50
          F |         17        0.17       77.67
          G |          3        0.03       77.70
          J |      1,585       15.85       93.55
          K |        248        2.48       96.03
          L |         18        0.18       96.21
          O |          1        0.01       96.22
          P |          1        0.01       96.23
          R |          9        0.09       96.32
          S |         46        0.46       96.78
          T |          8        0.08       96.86
          U |          3        0.03       96.89
          V |         10        0.10       96.99
          W |        230        2.30       99.29
          X |          1        0.01       99.30
          Y |         49        0.49       99.79
          Z |         21        0.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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