On publisher sites where I've had access to analytics we'd see an Ad-Blocker rate of 8% on the sites with a 'good' ad experience (low programmatic, less crappy positions and UX) but as high as 30% on the crappier ones (saturated with banner ads, had Outbrain/Taboola modules, etc).
(That was about 2 years ago so I would have thought that ad-blocking with continue its slow increase)