Frequencies for first 10,000 rows of vin_5 variable in vehicle dataset :

        vin |
character(5 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         50        0.50        0.50
          1 |         22        0.22        0.72
          2 |         30        0.30        1.02
          3 |         22        0.22        1.24
          4 |         40        0.40        1.64
          5 |         24        0.24        1.88
          6 |          8        0.08        1.96
          7 |          7        0.07        2.03
          8 |          8        0.08        2.11
          9 |        350        3.50        5.61
          A |        576        5.76       11.37
          B |        464        4.64       16.01
          C |        925        9.25       25.26
          D |        602        6.02       31.28
          E |        355        3.55       34.83
          F |        596        5.96       40.79
          G |        410        4.10       44.89
          H |        153        1.53       46.42
          J |        312        3.12       49.54
          K |        637        6.37       55.91
          L |        410        4.10       60.01
          M |        337        3.37       63.38
          N |        374        3.74       67.12
          P |        670        6.70       73.82
          R |        407        4.07       77.89
          S |        433        4.33       82.22
          T |        339        3.39       85.61
          U |        514        5.14       90.75
          V |        104        1.04       91.79
          W |        277        2.77       94.56
          X |        333        3.33       97.89
          Y |        103        1.03       98.92
          Z |        108        1.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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