Argentina, Sudan, and Iran are also experiencing 50% inflation per year.
I don't know if bitcoin is being used as a store of value even in unstable countries like Venezuela. If the citizens are using it at all, it's probably to pay for things. And my understanding is that even though their local currency is hyperinflated, most people have turned to either the USD or currencies from neighboring countries if they're stable enough. I've heard stories of Dash being widely adopted as a payment method in Venezuela, but I don't know if that's hype or what.
I'm also not sure how many people in those countries are trying to store any value. They're lucky if they have enough money to buy the basic necessities of life most of the time. Correct me if I'm wrong.