It's very hard to get exact numbers of users, because of how Bitcoin works, but this should give you a good sense of proportions and you could infer numbers of people based on known population sizes for each country
That link plays fast and loose with stats making any actual analysis impossible.
"We calculate the metric by estimating total cryptocurrency received by that country, and weighting the on-chain value based on PPP per capita"
Weigh how?
"we rank countries by their P2P trade volume and weight it to favor countries with lower PPP per capita and fewer internet users"
Weigh how? How do you get the numbers on internet users?
"We rank all 154 countries according to each of those three metrics, take the geometric mean of each country’s ranking in all three, and then normalize that final number on a scale of 0 to 1"
What?
It's not a methodology conductive to analysis. Is a hodge-podge of smart sounding words that create pretty graphs.
Oh, and they changed the methodology this year, but still compare results to previous years that used the old methodology. Very scientific
Do you?