Yes Half banana - its 100 billion.
Like always the WT uses only stats they like - the 20 billion is a very very old estimate, that convenient for them, they never revised.
Why? Where would you put them? How could a major portion of them reject the "truth" after being resurrected?
And how long would it take to resurrect them then teach them.. bla..bla..bla..
I used the 100 billion figure in a talk once, and a elder challenged me on it (even though I had referenced where it came from) but he of course did not want to believe that any info like that could change in the 50 since he read about it in a WT or Awake.
Funny how this 1 thing can bring down the ENTIRE house of cards if you think about the logistics.