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

 vin length |      Freq.     Percent        Cum.
------------+-----------------------------------
          5 |          2        0.02        0.02
          6 |          2        0.02        0.04
          7 |          2        0.02        0.06
          8 |          8        0.08        0.14
          9 |         12        0.12        0.26
         10 |         11        0.11        0.37
         11 |         24        0.24        0.61
         12 |         18        0.18        0.79
         13 |         20        0.20        0.99
         14 |          1        0.01        1.00
         17 |      9,557       95.57       96.57
          . |        343        3.43      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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