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

 VIN Length |      Freq.     Percent        Cum.
------------+-----------------------------------
          4 |          3        0.03        0.03
          5 |         15        0.15        0.18
          6 |        105        1.05        1.23
          7 |        111        1.11        2.34
          8 |        108        1.08        3.42
          9 |        436        4.36        7.78
         10 |        891        8.91       16.69
         11 |      2,287       22.87       39.56
         12 |        626        6.26       45.82
         13 |      3,885       38.85       84.67
         14 |         66        0.66       85.33
         15 |         11        0.11       85.44
         16 |          2        0.02       85.46
         17 |         18        0.18       85.64
         99 |      1,436       14.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016