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

 VIN LENGTH |      Freq.     Percent        Cum.
------------+-----------------------------------
          4 |          2        0.02        0.02
          5 |         13        0.13        0.15
          6 |         21        0.21        0.36
          7 |         51        0.51        0.87
          8 |         20        0.20        1.07
          9 |         77        0.77        1.84
         10 |        217        2.17        4.01
         11 |        497        4.97        8.98
         12 |        165        1.65       10.63
         13 |        971        9.71       20.34
         14 |         27        0.27       20.61
         15 |         14        0.14       20.75
         16 |          8        0.08       20.83
         17 |      7,917       79.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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