You are right, I don't know how to explain that chart. I was searching for a different one and got it instead.

This was the one I meant to use:

https://ec.europa.eu/eurostat/web/products-eurostat-news/-/D...?

I cannot explain the difference between the two. I would trust the EU more than a facts compilation site, but YMMV.

That is certainly interesting, though the fact that we have heavily conflicting data concerns me.

I'd look at the source, except it's hidden in Statista, behind a premium subscription. Wow, that's kind of dangerous.