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

    vehicle |
configurati |
         on |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,238       92.38       92.38
          1 |        124        1.24       93.62
          2 |         64        0.64       94.26
          4 |         29        0.29       94.55
          5 |         12        0.12       94.67
          6 |        436        4.36       99.03
          7 |         30        0.30       99.33
         19 |          5        0.05       99.38
         20 |          1        0.01       99.39
         21 |         45        0.45       99.84
         99 |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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