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

 VIN LENGTH |      Freq.     Percent        Cum.
------------+-----------------------------------
          5 |          4        0.04        0.04
          6 |          8        0.08        0.12
          7 |         10        0.10        0.22
          8 |         10        0.10        0.32
          9 |         18        0.18        0.50
         10 |         20        0.20        0.70
         11 |         44        0.44        1.14
         12 |         22        0.22        1.36
         13 |         87        0.87        2.23
         14 |          5        0.05        2.28
         15 |          2        0.02        2.30
         16 |          1        0.01        2.31
         17 |      9,755       97.55       99.86
         99 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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