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

     vin_10 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        152        1.52        1.52
          0 |        184        1.84        3.36
          1 |        138        1.38        4.74
          2 |        136        1.36        6.10
          3 |        141        1.41        7.51
          4 |        157        1.57        9.08
          5 |        175        1.75       10.83
          6 |        151        1.51       12.34
          7 |        133        1.33       13.67
          8 |        143        1.43       15.10
          9 |        534        5.34       20.44
          A |          4        0.04       20.48
          B |        236        2.36       22.84
          C |        269        2.69       25.53
          D |        309        3.09       28.62
          E |        435        4.35       32.97
          F |        557        5.57       38.54
          G |        622        6.22       44.76
          H |        571        5.71       50.47
          J |        599        5.99       56.46
          K |        645        6.45       62.91
          L |        530        5.30       68.21
          M |        606        6.06       74.27
          N |        578        5.78       80.05
          P |        588        5.88       85.93
          R |        759        7.59       93.52
          S |        620        6.20       99.72
          T |         28        0.28      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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