Does anyone know how many European PS2s actually shipped with Yabasic? AFAIK the tax ploy failed so they stopped at some point, and my slim PS2 doesn’t list any

Does anyone know how many European PS2s actually shipped with Yabasic? AFAIK the tax ploy failed so they stopped at some point, and my slim PS2 doesn’t list any discs on the box content list. Although it was second hand so it could have gone missing if it was unlisted for some reason. Edit: I was slight hasty, it does have some unlisted discs in the box, but neither “bonus demo 8 (you)” (©2004) or the “Network Access Disc” seem to have Yabasic on them.