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

      vin_8 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         23        0.23        0.23
          0 |        169        1.69        1.92
          1 |        476        4.76        6.68
          2 |        234        2.34        9.02
          3 |        350        3.50       12.52
          4 |        438        4.38       16.90
          5 |        397        3.97       20.87
          6 |        279        2.79       23.66
          7 |        149        1.49       25.15
          8 |        110        1.10       26.25
          9 |        513        5.13       31.38
          A |        350        3.50       34.88
          B |        230        2.30       37.18
          C |        254        2.54       39.72
          D |        320        3.20       42.92
          E |        516        5.16       48.08
          F |        246        2.46       50.54
          G |        194        1.94       52.48
          H |        201        2.01       54.49
          J |        153        1.53       56.02
          K |        463        4.63       60.65
          L |        252        2.52       63.17
          M |        194        1.94       65.11
          N |        303        3.03       68.14
          P |        216        2.16       70.30
          R |        360        3.60       73.90
          S |        375        3.75       77.65
          T |        356        3.56       81.21
          U |        255        2.55       83.76
          V |        220        2.20       85.96
          W |        449        4.49       90.45
          X |        488        4.88       95.33
          Y |        279        2.79       98.12
          Z |        188        1.88      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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