Frequencies for first 10,000 rows of eventnum variable in vevent dataset :

      Event |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      3,331       33.31       33.31
          2 |      2,334       23.34       56.65
          3 |      1,562       15.62       72.27
          4 |      1,166       11.66       83.93
          5 |        708        7.08       91.01
          6 |        413        4.13       95.14
          7 |        237        2.37       97.51
          8 |        124        1.24       98.75
          9 |         65        0.65       99.40
         10 |         40        0.40       99.80
         11 |         14        0.14       99.94
         12 |          5        0.05       99.99
         13 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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