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 |         43        0.43        0.46
          6 |        118        1.18        1.64
          7 |         56        0.56        2.20
          8 |        167        1.67        3.87
          9 |        382        3.82        7.69
         10 |        643        6.43       14.12
         11 |      1,893       18.93       33.05
         12 |        571        5.71       38.76
         13 |      3,091       30.91       69.67
         14 |         37        0.37       70.04
         15 |          5        0.05       70.09
         99 |      2,991       29.91      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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