40 visiting now: 18 USA 
15 China 
2 Belgium 
1 Germany 
1 Ecuador 
1 Canada 
1 Japan 
1 Korea 
15 China 2 Belgium 1 Germany 1 Ecuador 1 Canada 1 Japan 1 Korea 15 China 2 Belgium 1 Germany 1 Ecuador 1 Canada 1 Japan 1 Korea