Quote Originally Posted by KDSilver View Post
A lot of people keep saying that as well (only 1%) while he have no concrete data.
From the Lucky Census a while back, I believe the estimated numbers of active characters who have cleared.

UCoB: 1. 89%
UwU: 5.6%
TEA: 6%ish

The general average seems to be 5%. UCoB being the lowest makes sense due to its sheer length (clocking in at 17-18 minutes).