42 visiting now: 23 USA 
8 Singapore 
7 Belgium 
2 Canada 
2 France 
1 China 
1 Germany 
1 Iran 
8 Singapore 7 Belgium 2 Canada 2 France 1 China 1 Germany 1 Iran 8 Singapore 7 Belgium 2 Canada 2 France 1 China 1 Germany 1 Iran