how many country of the world now accept btc? 
I think many country accepted the bitcoin and some country are not because there own law. In my country lots of people know about bitcoin and we're glad that is legal so we can earn bitcoin freely. Well here in my country there's many bitcoin enthusiasts but I didnt know exactly the percentage.
And the government not yet legalized it nor regulate but we can freely use bitcoin here, like cashing out without tax, pay bills and others. And I think thats enough for me,as long the government is hands off to this we are all fine.