Frequencies for first 10,000 rows of vin_11 variable in vehicle dataset :

        vin |
character(1 |
         1) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         45        0.45        0.45
          0 |        404        4.04        4.49
          1 |        415        4.15        8.64
          2 |        314        3.14       11.78
          3 |         66        0.66       12.44
          4 |        110        1.10       13.54
          5 |        233        2.33       15.87
          6 |        113        1.13       17.00
          7 |        183        1.83       18.83
          8 |        106        1.06       19.89
          9 |        456        4.56       24.45
          A |        717        7.17       31.62
          B |        288        2.88       34.50
          C |        597        5.97       40.47
          D |        289        2.89       43.36
          E |        313        3.13       46.49
          F |        359        3.59       50.08
          G |        274        2.74       52.82
          H |        410        4.10       56.92
          J |        250        2.50       59.42
          K |        351        3.51       62.93
          L |        432        4.32       67.25
          M |        339        3.39       70.64
          N |        292        2.92       73.56
          P |        189        1.89       75.45
          R |        276        2.76       78.21
          S |        387        3.87       82.08
          T |        145        1.45       83.53
          U |        542        5.42       88.95
          V |         23        0.23       89.18
          W |        180        1.80       90.98
          X |        127        1.27       92.25
          Y |        263        2.63       94.88
          Z |        512        5.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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