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

 VIN LENGTH |      Freq.     Percent        Cum.
------------+-----------------------------------
          5 |          6        0.06        0.06
          6 |         14        0.14        0.20
          7 |         32        0.32        0.52
          8 |         10        0.10        0.62
          9 |         35        0.35        0.97
         10 |         59        0.59        1.56
         11 |        239        2.39        3.95
         12 |         86        0.86        4.81
         13 |        399        3.99        8.80
         14 |          9        0.09        8.89
         15 |          5        0.05        8.94
         16 |          1        0.01        8.95
         17 |      9,105       91.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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