Frequencies for first 10,000 rows of veh_cf1 variable in vehicle dataset :

    RELATED |
   FACTOR 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,035       90.35       90.35
          1 |        149        1.49       91.84
          2 |         50        0.50       92.34
          3 |          4        0.04       92.38
          4 |          1        0.01       92.39
          5 |          5        0.05       92.44
          7 |         12        0.12       92.56
          8 |          1        0.01       92.57
          9 |          6        0.06       92.63
         13 |          2        0.02       92.65
         14 |          1        0.01       92.66
         15 |          4        0.04       92.70
         16 |          1        0.01       92.71
         17 |         21        0.21       92.92
         18 |         20        0.20       93.12
         19 |          5        0.05       93.17
         31 |        398        3.98       97.15
         32 |         37        0.37       97.52
         33 |          1        0.01       97.53
         35 |          6        0.06       97.59
         36 |          2        0.02       97.61
         39 |          2        0.02       97.63
         41 |          7        0.07       97.70
         42 |          4        0.04       97.74
         99 |        226        2.26      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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