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

      vin_8 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        748        7.48        7.48
           |          1        0.01        7.49
          - |          2        0.02        7.51
          / |          1        0.01        7.52
          0 |      2,968       29.68       37.20
          1 |      2,155       21.55       58.75
          2 |        703        7.03       65.78
          3 |        502        5.02       70.80
          4 |        397        3.97       74.77
          5 |        393        3.93       78.70
          6 |        227        2.27       80.97
          7 |        187        1.87       82.84
          8 |        148        1.48       84.32
          9 |      1,389       13.89       98.21
          A |         34        0.34       98.55
          B |         21        0.21       98.76
          C |          1        0.01       98.77
          D |          6        0.06       98.83
          E |          2        0.02       98.85
          F |          9        0.09       98.94
          G |          1        0.01       98.95
          H |         28        0.28       99.23
          I |          2        0.02       99.25
          J |          3        0.03       99.28
          L |         10        0.10       99.38
          N |          6        0.06       99.44
          O |         25        0.25       99.69
          P |          2        0.02       99.71
          Q |          1        0.01       99.72
          R |          1        0.01       99.73
          S |          2        0.02       99.75
          T |         14        0.14       99.89
          U |          1        0.01       99.90
          V |          1        0.01       99.91
          W |          1        0.01       99.92
          Y |          2        0.02       99.94
          Z |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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