54 visiting now: 42 USA 
6 Singapore 
3 China 
2 UK 
2 Canada 
1 Finland 
1 France 
1 Germany 
1 Brazil 
1 Vietnam 
1 India 
1 Iran 
6 Singapore 3 China 2 UK 2 Canada 1 Finland 1 France 1 Germany 1 Brazil 1 Vietnam 1 India 1 Iran