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 |         30        0.30        0.32
          6 |         53        0.53        0.85
          7 |         69        0.69        1.54
          8 |         30        0.30        1.84
          9 |        137        1.37        3.21
         10 |        441        4.41        7.62
         11 |      1,000       10.00       17.62
         12 |        292        2.92       20.54
         13 |      1,697       16.97       37.51
         14 |         30        0.30       37.81
         15 |         10        0.10       37.91
         16 |          5        0.05       37.96
         17 |      5,719       57.19       95.15
         99 |        485        4.85      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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