48 visiting now: 30 USA 
8 Singapore 
3 UK 
2 Belgium 
2 Canada 
2 France 
1 China 
1 Vietnam 
1 Iran 
8 Singapore 3 UK 2 Belgium 2 Canada 2 France 1 China 1 Vietnam 1 Iran 8 Singapore 3 UK 2 Belgium 2 Canada 2 France 1 China 1 Vietnam 1 Iran