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 |          7        0.07        0.08
          6 |         24        0.24        0.32
          7 |         41        0.41        0.73
          8 |         15        0.15        0.88
          9 |         64        0.64        1.52
         10 |        195        1.95        3.47
         11 |        443        4.43        7.90
         12 |        108        1.08        8.98
         13 |        722        7.22       16.20
         14 |         17        0.17       16.37
         15 |          8        0.08       16.45
         16 |         17        0.17       16.62
         17 |      8,338       83.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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