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

 VIN Length |      Freq.     Percent        Cum.
------------+-----------------------------------
          4 |          1        0.01        0.01
          5 |          1        0.01        0.02
          6 |         10        0.10        0.12
          7 |         10        0.10        0.22
          8 |         68        0.68        0.90
          9 |        200        2.00        2.90
         10 |        517        5.17        8.07
         11 |      1,781       17.81       25.88
         12 |        430        4.30       30.18
         13 |      2,794       27.94       58.12
         14 |         15        0.15       58.27
         17 |          8        0.08       58.35
         99 |      4,165       41.65      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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