I think "no idea" is an entirely reasonable summary of the magnitude of the uncertainty.
To me, "no idea" suggests the number is likely off by an order of magnitude or more, and even the worst case country in this article was less than 2x with bigger countries having better numbers.
To me, "no idea" suggests the number is likely off by an order of magnitude or more, and even the worst case country in this article was less than 2x with bigger countries having better numbers.