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

      vin_3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         89        0.89        0.89
          1 |      1,167       11.67       12.56
          2 |        763        7.63       20.19
          3 |        752        7.52       27.71
          4 |        972        9.72       37.43
          5 |        106        1.06       38.49
          6 |        319        3.19       41.68
          7 |        276        2.76       44.44
          8 |        231        2.31       46.75
          9 |        376        3.76       50.51
          A |        902        9.02       59.53
          B |        132        1.32       60.85
          C |        490        4.90       65.75
          D |        258        2.58       68.33
          E |        179        1.79       70.12
          F |         42        0.42       70.54
          G |        279        2.79       73.33
          H |         81        0.81       74.14
          J |         31        0.31       74.45
          K |        169        1.69       76.14
          L |         81        0.81       76.95
          M |        548        5.48       82.43
          N |        270        2.70       85.13
          P |         92        0.92       86.05
          Q |          1        0.01       86.06
          R |         12        0.12       86.18
          S |         97        0.97       87.15
          T |        779        7.79       94.94
          U |        217        2.17       97.11
          V |         81        0.81       97.92
          W |         86        0.86       98.78
          X |         86        0.86       99.64
          Y |         26        0.26       99.90
          Z |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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