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

        vin |
character(9 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         20        0.20        0.20
          0 |        905        9.05        9.25
          1 |        852        8.52       17.77
          2 |        851        8.51       26.28
          3 |        856        8.56       34.84
          4 |        853        8.53       43.37
          5 |        934        9.34       52.71
          6 |        869        8.69       61.40
          7 |        849        8.49       69.89
          8 |        838        8.38       78.27
          9 |      1,264       12.64       90.91
          E |          1        0.01       90.92
          F |          1        0.01       90.93
          S |          1        0.01       90.94
          T |          1        0.01       90.95
          X |        905        9.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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