I don’t know about the first one, but I’d also love for them to support last year (and also last day!).
It seems like there are no endpoints in the API but I can only imagine it will not be hard to add them (maybe?).
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Edit: I lied. There’s of course the endpoints behind the charts. Ignore the poorly chosen key “daily”. With period=all you can see that this is the monthly data.
Still, I’d much rather have those two implemented in the API/Website but oh well, I guess it is technically possible as of now.