RIPE ran out of spare addresses at the end of 2019. After the queueing system was instituted some organisations must have returned some address blocks, which we

RIPE ran out of spare addresses at the end of 2019. After the queueing system was instituted some organisations must have returned some address blocks, which were used during 2020 and 2021, and my guess is that these have now run out. (it could just be that the return rate is below the request rate, but IMO the graph looks too straight for that).