37 visiting now: 17 USA 
7 China 
3 Germany 
3 Singapore 
2 Canada 
2 India 
1 Hong Kong 
1 Taiwan 
1 Iran 
7 China 3 Germany 3 Singapore 2 Canada 2 India 1 Hong Kong 1 Taiwan 1 Iran 7 China 3 Germany 3 Singapore 2 Canada 2 India 1 Hong Kong 1 Taiwan 1 Iran