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

    Vehicle |
     Number |
     (other |
   Vehicle) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        430        4.30        4.30
          2 |        900        9.00       13.30
          3 |        170        1.70       15.00
          4 |         34        0.34       15.34
          5 |         12        0.12       15.46
          6 |          4        0.04       15.50
          7 |          3        0.03       15.53
          8 |          2        0.02       15.55
          9 |          1        0.01       15.56
         10 |          1        0.01       15.57
       5555 |      3,920       39.20       54.77
       9999 |      4,523       45.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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