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

    RELATED |
   FACTOR 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,079       90.79       90.79
          1 |        147        1.47       92.26
          2 |         78        0.78       93.04
          3 |          8        0.08       93.12
          4 |          8        0.08       93.20
          5 |          7        0.07       93.27
          6 |          2        0.02       93.29
          7 |          7        0.07       93.36
          8 |          4        0.04       93.40
          9 |          5        0.05       93.45
         10 |          1        0.01       93.46
         13 |          1        0.01       93.47
         14 |          6        0.06       93.53
         15 |          6        0.06       93.59
         16 |          4        0.04       93.63
         18 |         21        0.21       93.84
         31 |        359        3.59       97.43
         32 |          3        0.03       97.46
         33 |          5        0.05       97.51
         99 |        249        2.49      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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