Frequencies for first 10,000 rows of vin_2 variable in vehicle dataset :

        VIN |
Character(2 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         21        0.21        0.21
          1 |         19        0.19        0.40
          2 |         10        0.10        0.50
          3 |          7        0.07        0.57
          4 |          4        0.04        0.61
          5 |         18        0.18        0.79
          6 |          2        0.02        0.81
          7 |          2        0.02        0.83
          8 |          8        0.08        0.91
          9 |        383        3.83        4.74
          A |        215        2.15        6.89
          B |        463        4.63       11.52
          C |        200        2.00       13.52
          D |        262        2.62       16.14
          E |         11        0.11       16.25
          F |      1,643       16.43       32.68
          G |      2,030       20.30       52.98
          H |      1,217       12.17       65.15
          J |        232        2.32       67.47
          K |        111        1.11       68.58
          L |        100        1.00       69.58
          M |        371        3.71       73.29
          N |        798        7.98       81.27
          P |         57        0.57       81.84
          R |          8        0.08       81.92
          S |        293        2.93       84.85
          T |        924        9.24       94.09
          U |         11        0.11       94.20
          V |        176        1.76       95.96
          W |         12        0.12       96.08
          X |        144        1.44       97.52
          Y |        201        2.01       99.53
          Z |         47        0.47      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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