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

 VIN LENGTH |      Freq.     Percent        Cum.
------------+-----------------------------------
          5 |          1        0.01        0.01
          6 |          5        0.05        0.06
          7 |         12        0.12        0.18
          8 |          4        0.04        0.22
          9 |         14        0.14        0.36
         10 |         35        0.35        0.71
         11 |         72        0.72        1.43
         12 |         21        0.21        1.64
         13 |        142        1.42        3.06
         14 |          7        0.07        3.13
         16 |          3        0.03        3.16
         17 |      9,670       96.70       99.86
         99 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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