What are the bounties of the Yonko? We know that the Yonko are one of the three great powers of the One Piece World. Though they are the four emperors ruling the second half of grand line, they are still Pirates in the eyes of the world government with some bounties set for each of them.

So can somebody tell what the current bounties (as of Jan 2020) of the present/past yonkos are?

Bounties for the guys I'm looking for:


Edward Newgate, Whitebeard (now deceased)
"Red-Haired" Shanks
Charlotte Linlin, Big Mom
Kaido of the Beasts
Marshall D. Teach, Blackbeard (took over as the Yonko after WB's death)


Note: Like the Shichibukai, even the Yonkos might not have their bounties active (I do not know for sure), but certainly there must be a bounty on them which would determine their strengths, influence and importance (need a case arise when one of them is dethroned).
Bounties for Yonkos haven't been shown till now. And IMO, for someone as powerful as a Yonko, bounties doesn't matter much. Bounties are set so that some bounty hunter would be tempted to capture them. But yonkos being one of the most powerful forces in OP, no one would dare to capture a Yonko.

WhiteBeard- Not revealed. 

Shanks- Not revealed.

Big Mam- Not revealed.

Kaido- Not revealed.

Blackbeard- Not given any bounty.