43 visiting now: 24 USA 
8 Singapore 
2 UK 
2 France 
2 Belgium 
1 Iran 
1 Australia 
1 Poland 
1 Russia 
1 Canada 
1 China 
8 Singapore 2 UK 2 France 2 Belgium 1 Iran 1 Australia 1 Poland 1 Russia 1 Canada 1 China