There is no evidence for the decline you claim.

it was not a “claim”.

Apologies if others knowing things you don’t offends you.

Note that I have not engaged in ad hominem attacks, which seem to be the bulk of your response.

Here is a sample of what I won’t be directly referencing for you. It took me less than 15 seconds to find.

There is a multitude of evidence that you are evidently completely unaware of.

Reference “beginner’s guide to searching Google”. It might prevent further embarrassment in the future.