Frequencies for vin_lngt variable in vehicle dataset :

 VIN LENGTH |      Freq.     Percent        Cum.
------------+-----------------------------------
          5 |          1        0.14        0.14
          6 |          1        0.14        0.28
          7 |          1        0.14        0.42
          8 |          3        0.42        0.84
          9 |          8        1.12        1.96
         10 |         11        1.54        3.49
         11 |         15        2.09        5.59
         12 |          8        1.12        6.70
         13 |         39        5.45       12.15
         17 |        629       87.85      100.00
------------+-----------------------------------
      Total |        716      100.00

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