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

      vin_3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        753        7.53        7.53
          1 |        906        9.06       16.59
          2 |      1,057       10.57       27.16
          3 |        781        7.81       34.97
          4 |      1,260       12.60       47.57
          5 |        732        7.32       54.89
          6 |        811        8.11       63.00
          7 |        436        4.36       67.36
          8 |        550        5.50       72.86
          9 |      1,060       10.60       83.46
          A |        208        2.08       85.54
          B |         93        0.93       86.47
          C |         90        0.90       87.37
          D |         67        0.67       88.04
          E |        140        1.40       89.44
          F |        127        1.27       90.71
          G |         25        0.25       90.96
          H |         25        0.25       91.21
          I |          1        0.01       91.22
          J |          3        0.03       91.25
          K |         21        0.21       91.46
          L |        268        2.68       94.14
          M |         58        0.58       94.72
          N |         84        0.84       95.56
          O |          1        0.01       95.57
          P |         15        0.15       95.72
          Q |         17        0.17       95.89
          R |         26        0.26       96.15
          S |         81        0.81       96.96
          T |        108        1.08       98.04
          U |         20        0.20       98.24
          V |         42        0.42       98.66
          W |         13        0.13       98.79
          X |         17        0.17       98.96
          Y |         82        0.82       99.78
          Z |         22        0.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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