I think this can still peak inside the top 10 at the pace it's going at.
It only dropped down to 18 because of the 3 new debuts. CMM, WA, and Lights are falling so PTA should be able to pass them eventually as long as it keeps increasing at a steady rate. it looks like Whistle and Good Time are starting to fall too. I'm probably wrong about all this though, I'm just basing this upon the chart.