Frequencies for vin_9 variable in vehicle dataset :

      vin_9 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          2        0.32        0.32
          0 |         79       12.62       12.94
          1 |         54        8.63       21.57
          2 |         48        7.67       29.23
          3 |         56        8.95       38.18
          4 |         50        7.99       46.17
          5 |         40        6.39       52.56
          6 |         37        5.91       58.47
          7 |         46        7.35       65.81
          8 |         50        7.99       73.80
          9 |        121       19.33       93.13
          E |          1        0.16       93.29
          F |          1        0.16       93.45
          X |         41        6.55      100.00
------------+-----------------------------------
      Total |        626      100.00

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