14 visiting now: 8 USA 
2 Vietnam 
1 France 
1 Indonesia 
1 Switzerland 
1 Brazil 
1 Canada 
1 China 
2 Vietnam 1 France 1 Indonesia 1 Switzerland 1 Brazil 1 Canada 1 China 2 Vietnam 1 France 1 Indonesia 1 Switzerland 1 Brazil 1 Canada 1 China