Someone said on the other thread that Jim said 20k renewed.
There were 22.5k STHs last season, so that's 2500 new STs made available this summer, and 90% renewal rate.
For context last season (post promotion), there were 500 new STs available, and 98% renewal rate.
The 10k member figure is from how many members applied for a ST in the ballot a few years ago, so the true number of members is probably 15-20k, if you include those who didn't apply.