27 visiting now: 15 USA 
5 China 
2 Belgium 
1 Japan 
1 Canada 
1 South Africa 
1 Bangladesh 
1 Germany 
5 China 2 Belgium 1 Japan 1 Canada 1 South Africa 1 Bangladesh 1 Germany 5 China 2 Belgium 1 Japan 1 Canada 1 South Africa 1 Bangladesh 1 Germany