Frequencies for first 10,000 rows of caseversion variable in demo2018q2 dataset :

     Safety |
     Report |
    Version |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |      3,321       33.21       33.21
          3 |      2,344       23.44       56.65
          4 |      1,458       14.58       71.23
          5 |        986        9.86       81.09
          6 |        723        7.23       88.32
          7 |        514        5.14       93.46
          8 |        347        3.47       96.93
          9 |        307        3.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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