Frequencies for first 10,000 rows of vin_8 variable in vehicle dataset :

      vin_8 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         23        0.23        0.23
          0 |        147        1.47        1.70
          1 |        495        4.95        6.65
          2 |        252        2.52        9.17
          3 |        392        3.92       13.09
          4 |        540        5.40       18.49
          5 |        333        3.33       21.82
          6 |        213        2.13       23.95
          7 |        147        1.47       25.42
          8 |        116        1.16       26.58
          9 |        476        4.76       31.34
          A |        343        3.43       34.77
          B |        257        2.57       37.34
          C |        277        2.77       40.11
          D |        288        2.88       42.99
          E |        469        4.69       47.68
          F |        262        2.62       50.30
          G |        205        2.05       52.35
          H |        214        2.14       54.49
          J |        206        2.06       56.55
          K |        420        4.20       60.75
          L |        242        2.42       63.17
          M |        226        2.26       65.43
          N |        266        2.66       68.09
          P |        201        2.01       70.10
          R |        401        4.01       74.11
          S |        368        3.68       77.79
          T |        347        3.47       81.26
          U |        247        2.47       83.73
          V |        169        1.69       85.42
          W |        457        4.57       89.99
          X |        513        5.13       95.12
          Y |        289        2.89       98.01
          Z |        199        1.99      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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