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

    RELATED |
   FACTOR 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,657       86.57       86.57
          1 |        218        2.18       88.75
          2 |        114        1.14       89.89
          3 |          7        0.07       89.96
          4 |          3        0.03       89.99
          5 |         11        0.11       90.10
          7 |          9        0.09       90.19
          9 |         11        0.11       90.30
         10 |          1        0.01       90.31
         11 |          1        0.01       90.32
         12 |          1        0.01       90.33
         13 |          3        0.03       90.36
         14 |          7        0.07       90.43
         15 |          5        0.05       90.48
         16 |          8        0.08       90.56
         18 |         20        0.20       90.76
         31 |        388        3.88       94.64
         32 |         38        0.38       95.02
         33 |          4        0.04       95.06
         99 |        494        4.94      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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