22 visiting now: 8 USA 
5 Russia 
3 China 
2 Singapore 
1 Latvia 
1 Bangladesh 
1 France 
1 UK 
5 Russia 3 China 2 Singapore 1 Latvia 1 Bangladesh 1 France 1 UK 5 Russia 3 China 2 Singapore 1 Latvia 1 Bangladesh 1 France 1 UK