29 visiting now: 10 USA 
5 China 
4 Singapore 
2 Italy 
2 India 
1 Netherlands 
1 Bangladesh 
1 Korea 
1 Taiwan 
1 Germany 
1 Laos 
5 China 4 Singapore 2 Italy 2 India 1 Netherlands 1 Bangladesh 1 Korea 1 Taiwan 1 Germany 1 Laos