Frequencies for first 10,000 rows of vin_3 variable in vehicle dataset :

      vin_3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        696        6.96        6.96
          1 |        982        9.82       16.78
          2 |      1,083       10.83       27.61
          3 |        783        7.83       35.44
          4 |      1,118       11.18       46.62
          5 |        726        7.26       53.88
          6 |        774        7.74       61.62
          7 |        401        4.01       65.63
          8 |        579        5.79       71.42
          9 |        968        9.68       81.10
          A |        272        2.72       83.82
          B |         94        0.94       84.76
          C |        121        1.21       85.97
          D |         91        0.91       86.88
          E |        148        1.48       88.36
          F |        142        1.42       89.78
          G |         18        0.18       89.96
          H |         24        0.24       90.20
          I |          7        0.07       90.27
          J |          8        0.08       90.35
          K |         21        0.21       90.56
          L |        266        2.66       93.22
          M |         67        0.67       93.89
          N |         68        0.68       94.57
          O |          1        0.01       94.58
          P |         19        0.19       94.77
          Q |         10        0.10       94.87
          R |         32        0.32       95.19
          S |         89        0.89       96.08
          T |        159        1.59       97.67
          U |         42        0.42       98.09
          V |         27        0.27       98.36
          W |         14        0.14       98.50
          X |         10        0.10       98.60
          Y |        100        1.00       99.60
          Z |         39        0.39       99.99
          _ |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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