The article says that 3,700,000 people were convicted of bribery and 70% were government officials.
I think that in mining it is impossible without this. If a miner works illegally, then he does not pay taxes, which means he has money for bribes. It's the same in Russia.
I see, so it is just speculation so far. I guess it is unlikely to see any concrete data since most miners would likely prefer to hide to avoid being found out by the government. On the other hand, it is still up to debate how many people bribe somebody, and how many decide to mine and avoid both tax and bribe.I think that in mining it is impossible without this. If a miner works illegally, then he does not pay taxes, which means he has money for bribes. It's the same in Russia.
Where is the Russian hashrate on your chart? Russia ranks 2nd in mining 
Isn't it possible that miners from Russia participated in one of the pools above? I don't see any country mentioned at all unless you count the USA if you think Foundry USA represents the whole country.