Frequencies for first 10,000 rows of vin_10 variable in vehicle dataset :

     vin_10 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         97        0.97        0.97
          0 |         96        0.96        1.93
          1 |         67        0.67        2.60
          2 |         70        0.70        3.30
          3 |         71        0.71        4.01
          4 |         60        0.60        4.61
          5 |         59        0.59        5.20
          6 |         71        0.71        5.91
          7 |         66        0.66        6.57
          8 |         57        0.57        7.14
          9 |        419        4.19       11.33
          A |          2        0.02       11.35
          B |        129        1.29       12.64
          C |        131        1.31       13.95
          D |        184        1.84       15.79
          E |        252        2.52       18.31
          F |        355        3.55       21.86
          G |        396        3.96       25.82
          H |        415        4.15       29.97
          J |        495        4.95       34.92
          K |        598        5.98       40.90
          L |        499        4.99       45.89
          M |        510        5.10       50.99
          N |        474        4.74       55.73
          P |        572        5.72       61.45
          R |        636        6.36       67.81
          S |        679        6.79       74.60
          T |        548        5.48       80.08
          V |        632        6.32       86.40
          W |        665        6.65       93.05
          X |        640        6.40       99.45
          Y |         54        0.54       99.99
          r |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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