Frequencies for first 10,000 rows of caseversion variable in demo2018q3 dataset :

     Safety |
     Report |
    Version |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |      2,665       26.65       26.65
          3 |      2,493       24.93       51.58
          4 |      1,688       16.88       68.46
          5 |      1,062       10.62       79.08
          6 |        773        7.73       86.81
          7 |        595        5.95       92.76
          8 |        396        3.96       96.72
          9 |        328        3.28      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Mar 2019