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

 VIN LENGTH |      Freq.     Percent        Cum.
------------+-----------------------------------
          3 |          1        0.01        0.01
          4 |          3        0.03        0.04
          5 |          5        0.05        0.09
          6 |         27        0.27        0.36
          7 |         52        0.52        0.88
          8 |          8        0.08        0.96
          9 |         52        0.52        1.48
         10 |        157        1.57        3.05
         11 |        325        3.25        6.30
         12 |        120        1.20        7.50
         13 |        587        5.87       13.37
         14 |          9        0.09       13.46
         15 |          7        0.07       13.53
         16 |          6        0.06       13.59
         17 |      8,641       86.41      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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