31 visiting now: 18 USA 
8 Canada 
4 Singapore 
3 UK 
1 China 
1 Germany 
1 Ireland 
1 Bangladesh 
1 Spain 
8 Canada 4 Singapore 3 UK 1 China 1 Germany 1 Ireland 1 Bangladesh 1 Spain 8 Canada 4 Singapore 3 UK 1 China 1 Germany 1 Ireland 1 Bangladesh 1 Spain