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

     vin_11 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         62        0.62        0.62
          0 |        491        4.91        5.53
          1 |        330        3.30        8.83
          2 |        338        3.38       12.21
          3 |         84        0.84       13.05
          4 |        148        1.48       14.53
          5 |        192        1.92       16.45
          6 |        161        1.61       18.06
          7 |        198        1.98       20.04
          8 |        167        1.67       21.71
          9 |        524        5.24       26.95
          A |        543        5.43       32.38
          B |        233        2.33       34.71
          C |        716        7.16       41.87
          D |        242        2.42       44.29
          E |        321        3.21       47.50
          F |        272        2.72       50.22
          G |        212        2.12       52.34
          H |        461        4.61       56.95
          J |        258        2.58       59.53
          K |        327        3.27       62.80
          L |        373        3.73       66.53
          M |        337        3.37       69.90
          N |        230        2.30       72.20
          P |        315        3.15       75.35
          R |        244        2.44       77.79
          S |        295        2.95       80.74
          T |        194        1.94       82.68
          U |        517        5.17       87.85
          V |         26        0.26       88.11
          W |        203        2.03       90.14
          X |        142        1.42       91.56
          Y |        248        2.48       94.04
          Z |        596        5.96      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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