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 |         14        0.14        0.16
          6 |         28        0.28        0.44
          7 |         43        0.43        0.87
          8 |         20        0.20        1.07
          9 |        109        1.09        2.16
         10 |        264        2.64        4.80
         11 |        670        6.70       11.50
         12 |        206        2.06       13.56
         13 |      1,219       12.19       25.75
         14 |         32        0.32       26.07
         15 |         11        0.11       26.18
         16 |          5        0.05       26.23
         17 |      7,031       70.31       96.54
         99 |        346        3.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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