60 visiting now: 30 USA 
8 Singapore 
4 Brazil 
4 Canada 
3 China 
2 Germany 
2 Australia 
2 Belgium 
1 Russia 
1 Vietnam 
1 Saudi Arabia 
1 Iran 
1 Senegal 
1 Japan 
1 Mexico 
1 UK 
1 Pakistan 
8 Singapore 4 Brazil 4 Canada 3 China 2 Germany 2 Australia 2 Belgium 1 Russia 1 Vietnam 1 Saudi Arabia 1 Iran 1 Senegal 1 Japan 1 Mexico 1 UK 1 Pakistan