44 visiting now: 24 USA 
12 Singapore 
3 UK 
3 Canada 
2 Belgium 
1 China 
1 Iran 
1 Argentina 
12 Singapore 3 UK 3 Canada 2 Belgium 1 China 1 Iran 1 Argentina 12 Singapore 3 UK 3 Canada 2 Belgium 1 China 1 Iran 1 Argentina