Frequencies for first 10,000 rows of vnumber2 variable in cevent dataset :

    Vehicle |
   Number 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        429        4.29        4.29
          2 |        884        8.84       13.13
          3 |        175        1.75       14.88
          4 |         47        0.47       15.35
          5 |         18        0.18       15.53
          6 |          7        0.07       15.60
          7 |          3        0.03       15.63
          8 |          2        0.02       15.65
          9 |          1        0.01       15.66
         10 |          1        0.01       15.67
         11 |          1        0.01       15.68
         12 |          1        0.01       15.69
         13 |          1        0.01       15.70
         14 |          1        0.01       15.71
         15 |          1        0.01       15.72
       9999 |      8,428       84.28      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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