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

      vin_2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          3        0.03        0.03
          0 |        165        1.65        1.68
          1 |      1,071       10.71       12.39
          2 |        570        5.70       18.09
          3 |        465        4.65       22.74
          4 |        215        2.15       24.89
          5 |        281        2.81       27.70
          6 |        429        4.29       31.99
          7 |        147        1.47       33.46
          8 |        135        1.35       34.81
          9 |      1,396       13.96       48.77
          A |        401        4.01       52.78
          B |        353        3.53       56.31
          C |        425        4.25       60.56
          D |        169        1.69       62.25
          E |        261        2.61       64.86
          F |        128        1.28       66.14
          G |        202        2.02       68.16
          H |        399        3.99       72.15
          I |          2        0.02       72.17
          J |        322        3.22       75.39
          K |        313        3.13       78.52
          L |        583        5.83       84.35
          M |        142        1.42       85.77
          N |        113        1.13       86.90
          O |          5        0.05       86.95
          P |        145        1.45       88.40
          Q |         47        0.47       88.87
          R |        288        2.88       91.75
          S |        155        1.55       93.30
          T |        140        1.40       94.70
          U |         62        0.62       95.32
          V |         81        0.81       96.13
          W |         85        0.85       96.98
          X |         94        0.94       97.92
          Y |        106        1.06       98.98
          Z |        102        1.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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