Frequencies for first 10,000 rows of caseversion variable in demo2017q3 dataset :

     Safety |
     Report |
    Version |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |      3,478       34.78       34.78
          3 |      2,520       25.20       59.98
          4 |      1,523       15.23       75.21
          5 |        919        9.19       84.40
          6 |        576        5.76       90.16
          7 |        442        4.42       94.58
          8 |        318        3.18       97.76
          9 |        224        2.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 Feb 2018