22 visiting now: 8 USA 
3 Singapore 
2 Brazil 
2 France 
2 Switzerland 
1 Lithuania 
1 UK 
1 Mexico 
1 Bangladesh 
1 Russia 
1 Vietnam 
1 Japan 
1 Taiwan 
3 Singapore 2 Brazil 2 France 2 Switzerland 1 Lithuania 1 UK 1 Mexico 1 Bangladesh 1 Russia 1 Vietnam 1 Japan 1 Taiwan