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

    RELATED |
   FACTOR 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,272       92.72       92.72
          1 |        134        1.34       94.06
          2 |         28        0.28       94.34
          3 |          4        0.04       94.38
          4 |          1        0.01       94.39
          5 |          5        0.05       94.44
          7 |          2        0.02       94.46
          9 |          3        0.03       94.49
         14 |          1        0.01       94.50
         15 |          2        0.02       94.52
         16 |          3        0.03       94.55
         17 |          4        0.04       94.59
         18 |          3        0.03       94.62
         19 |          1        0.01       94.63
         31 |        417        4.17       98.80
         32 |         26        0.26       99.06
         35 |          3        0.03       99.09
         36 |          6        0.06       99.15
         39 |          1        0.01       99.16
         41 |          2        0.02       99.18
         42 |          2        0.02       99.20
         99 |         80        0.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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