43 visiting now: 26 USA 
8 Singapore 
4 UK 
2 Russia 
2 Canada 
1 Iran 
1 Poland 
1 Belgium 
1 China 
1 France 
8 Singapore 4 UK 2 Russia 2 Canada 1 Iran 1 Poland 1 Belgium 1 China 1 France 8 Singapore 4 UK 2 Russia 2 Canada 1 Iran 1 Poland 1 Belgium 1 China 1 France