Frequencies for vin_1 variable in vehicle dataset :

      vin_1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          7        1.48        1.48
          1 |        116       24.58       26.06
          2 |         32        6.78       32.84
          3 |         11        2.33       35.17
          4 |         15        3.18       38.35
          5 |         11        2.33       40.68
          9 |         45        9.53       50.21
          A |          1        0.21       50.42
          C |          1        0.21       50.64
          H |          1        0.21       50.85
          J |        182       38.56       89.41
          K |         23        4.87       94.28
          L |         17        3.60       97.88
          R |          1        0.21       98.09
          T |          1        0.21       98.31
          W |          6        1.27       99.58
          Y |          1        0.21       99.79
          Z |          1        0.21      100.00
------------+-----------------------------------
      Total |        472      100.00

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