It's ironic that the No. 1 nation on the list acceotev Bitcoin as a legal tender, while in the second Bitcoin is not accepted by the government and actually is banned in bank transactions. This goes to show that the while government acceptance helps to make citizens more receptive of Bitcoin, the citizens can choose to adopt it regardless.
I do not know much about the other countries on the list, I have read that Switzerland is friendly to Bitcoin. And in Canada, there was an incident recently where the gov't was freezing accounts, could that play a part in the search boasts?