Frequencies for first 10,000 rows of vin_11 variable in vehicle dataset :

     vin_11 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         55        0.55        0.55
          0 |        433        4.33        4.88
          1 |        384        3.84        8.72
          2 |        368        3.68       12.40
          3 |         66        0.66       13.06
          4 |        139        1.39       14.45
          5 |        205        2.05       16.50
          6 |        146        1.46       17.96
          7 |        183        1.83       19.79
          8 |        122        1.22       21.01
          9 |        392        3.92       24.93
          A |        678        6.78       31.71
          B |        206        2.06       33.77
          C |        643        6.43       40.20
          D |        228        2.28       42.48
          E |        346        3.46       45.94
          F |        318        3.18       49.12
          G |        252        2.52       51.64
          H |        423        4.23       55.87
          J |        285        2.85       58.72
          K |        383        3.83       62.55
          L |        406        4.06       66.61
          M |        256        2.56       69.17
          N |        302        3.02       72.19
          P |        220        2.20       74.39
          R |        264        2.64       77.03
          S |        354        3.54       80.57
          T |        149        1.49       82.06
          U |        556        5.56       87.62
          V |         25        0.25       87.87
          W |        205        2.05       89.92
          X |        149        1.49       91.41
          Y |        304        3.04       94.45
          Z |        555        5.55      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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