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

    RELATED |
   FACTOR 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,188       91.88       91.88
          1 |        144        1.44       93.32
          2 |         24        0.24       93.56
          4 |          6        0.06       93.62
          5 |          7        0.07       93.69
          6 |          1        0.01       93.70
          7 |          3        0.03       93.73
         10 |          2        0.02       93.75
         14 |          1        0.01       93.76
         15 |          1        0.01       93.77
         16 |          3        0.03       93.80
         18 |          8        0.08       93.88
         19 |          4        0.04       93.92
         31 |        438        4.38       98.30
         32 |         45        0.45       98.75
         33 |          1        0.01       98.76
         35 |          3        0.03       98.79
         36 |         10        0.10       98.89
         39 |          1        0.01       98.90
         42 |          2        0.02       98.92
         43 |          3        0.03       98.95
         99 |        105        1.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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