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

 VIN Length |      Freq.     Percent        Cum.
------------+-----------------------------------
          4 |         11        0.11        0.11
          5 |         29        0.29        0.40
          6 |        118        1.18        1.58
          7 |        172        1.72        3.30
          8 |        124        1.24        4.54
          9 |        442        4.42        8.96
         10 |        988        9.88       18.84
         11 |      2,264       22.64       41.48
         12 |        719        7.19       48.67
         13 |      3,763       37.63       86.30
         14 |         78        0.78       87.08
         15 |         20        0.20       87.28
         16 |          3        0.03       87.31
         17 |        478        4.78       92.09
         99 |        791        7.91      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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