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

      vin_8 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         52        0.52        0.52
          0 |        245        2.45        2.97
          1 |        554        5.54        8.51
          2 |        285        2.85       11.36
          3 |        440        4.40       15.76
          4 |        487        4.87       20.63
          5 |        287        2.87       23.50
          6 |        232        2.32       25.82
          7 |        135        1.35       27.17
          8 |        113        1.13       28.30
          9 |        465        4.65       32.95
          A |        414        4.14       37.09
          B |        339        3.39       40.48
          C |        255        2.55       43.03
          D |        262        2.62       45.65
          E |        391        3.91       49.56
          F |        258        2.58       52.14
          G |        155        1.55       53.69
          H |        306        3.06       56.75
          J |        175        1.75       58.50
          K |        444        4.44       62.94
          L |        191        1.91       64.85
          M |        225        2.25       67.10
          N |        246        2.46       69.56
          P |        236        2.36       71.92
          R |        411        4.11       76.03
          S |        416        4.16       80.19
          T |        246        2.46       82.65
          U |        264        2.64       85.29
          V |         70        0.70       85.99
          W |        392        3.92       89.91
          X |        478        4.78       94.69
          Y |        313        3.13       97.82
          Z |        218        2.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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