52 visiting now: 17 USA 
10 Singapore 
7 India 
5 Brazil 
3 Canada 
2 China 
2 Ukraine 
2 Russia 
2 UK 
1 New Zealand 
1 Germany 
1 Argentina 
1 Philippines 
1 Australia 
1 Venezuela 
1 Iran 
1 Iraq 
1 Korea 
10 Singapore 7 India 5 Brazil 3 Canada 2 China 2 Ukraine 2 Russia 2 UK 1 New Zealand 1 Germany 1 Argentina 1 Philippines 1 Australia 1 Venezuela 1 Iran 1 Iraq 1 Korea