Frequencies for vin_1 variable in vehnit dataset :

      vin_1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          4        0.30        0.30
          1 |        744       56.02       56.33
          2 |        162       12.20       68.52
          3 |         71        5.35       73.87
          4 |         66        4.97       78.84
          5 |         28        2.11       80.95
          6 |          2        0.15       81.10
          7 |          2        0.15       81.25
          8 |          1        0.08       81.33
          9 |         59        4.44       85.77
          B |          1        0.08       85.84
          C |          5        0.38       86.22
          E |          1        0.08       86.30
          F |          5        0.38       86.67
          J |        121        9.11       95.78
          K |         24        1.81       97.59
          M |          2        0.15       97.74
          R |          1        0.08       97.82
          S |          7        0.53       98.34
          V |          1        0.08       98.42
          W |         16        1.20       99.62
          Y |          5        0.38      100.00
------------+-----------------------------------
      Total |      1,328      100.00

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