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

    RELATED |
   FACTOR 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,980       89.80       89.80
          1 |        205        2.05       91.85
          2 |         65        0.65       92.50
          3 |          9        0.09       92.59
          4 |         10        0.10       92.69
          5 |          3        0.03       92.72
          7 |         13        0.13       92.85
          8 |          1        0.01       92.86
          9 |          7        0.07       92.93
         10 |          2        0.02       92.95
         11 |          1        0.01       92.96
         12 |          4        0.04       93.00
         13 |          1        0.01       93.01
         14 |          2        0.02       93.03
         15 |          3        0.03       93.06
         16 |          3        0.03       93.09
         17 |          6        0.06       93.15
         18 |         24        0.24       93.39
         31 |        374        3.74       97.13
         32 |         11        0.11       97.24
         33 |          3        0.03       97.27
         34 |         31        0.31       97.58
         35 |          9        0.09       97.67
         37 |          1        0.01       97.68
         99 |        232        2.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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