45 visiting now: 26 USA 
8 Singapore 
4 UK 
3 France 
3 Russia 
2 Iran 
2 Pakistan 
1 Belgium 
1 China 
8 Singapore 4 UK 3 France 3 Russia 2 Iran 2 Pakistan 1 Belgium 1 China 8 Singapore 4 UK 3 France 3 Russia 2 Iran 2 Pakistan 1 Belgium 1 China