68 visiting now: 25 USA 
15 Russia 
10 China 
6 Singapore 
3 Bangladesh 
2 Brazil 
2 India 
2 UK 
1 Iran 
1 Germany 
1 France 
15 Russia 10 China 6 Singapore 3 Bangladesh 2 Brazil 2 India 2 UK 1 Iran 1 Germany 1 France