Frequencies for first 10,000 rows of vin_9 variable in vehicle dataset :

        vin |
character(9 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         14        0.14        0.14
          0 |        963        9.63        9.77
          1 |        860        8.60       18.37
          2 |        848        8.48       26.85
          3 |        850        8.50       35.35
          4 |        882        8.82       44.17
          5 |        877        8.77       52.94
          6 |        880        8.80       61.74
          7 |        874        8.74       70.48
          8 |        837        8.37       78.85
          9 |      1,197       11.97       90.82
          B |          1        0.01       90.83
          C |          4        0.04       90.87
          K |          1        0.01       90.88
          U |          1        0.01       90.89
          X |        911        9.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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