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

 VIN LENGTH |      Freq.     Percent        Cum.
------------+-----------------------------------
          3 |          1        0.01        0.01
          5 |          1        0.01        0.02
          6 |         12        0.12        0.14
          7 |         12        0.12        0.26
          8 |          3        0.03        0.29
          9 |         18        0.18        0.47
         10 |         35        0.35        0.82
         11 |         92        0.92        1.74
         12 |         39        0.39        2.13
         13 |        157        1.57        3.70
         14 |          7        0.07        3.77
         15 |          2        0.02        3.79
         16 |          5        0.05        3.84
         17 |      9,587       95.87       99.71
         99 |         29        0.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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