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

        VIN |
Character(9 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         21        0.21        0.21
          0 |        879        8.79        9.00
          1 |        877        8.77       17.77
          2 |        880        8.80       26.57
          3 |        865        8.65       35.22
          4 |        866        8.66       43.88
          5 |        863        8.63       52.51
          6 |        856        8.56       61.07
          7 |        902        9.02       70.09
          8 |        872        8.72       78.81
          9 |      1,243       12.43       91.24
          C |          1        0.01       91.25
          J |          1        0.01       91.26
          T |          1        0.01       91.27
          V |          1        0.01       91.28
          X |        872        8.72      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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