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

     vin_10 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,022       10.22       10.22
          0 |      1,866       18.66       28.88
          1 |        725        7.25       36.13
          2 |        722        7.22       43.35
          3 |        707        7.07       50.42
          4 |        674        6.74       57.16
          5 |        672        6.72       63.88
          6 |        694        6.94       70.82
          7 |        691        6.91       77.73
          8 |        627        6.27       84.00
          9 |      1,561       15.61       99.61
          A |         29        0.29       99.90
          B |          1        0.01       99.91
          D |          1        0.01       99.92
          L |          5        0.05       99.97
          M |          1        0.01       99.98
          R |          1        0.01       99.99
          U |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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