30 visiting now: 9 Singapore 
8 USA 
4 UK 
2 China 
2 France 
2 Poland 
1 Brazil 
1 Thailand 
1 Congo 
1 Malaysia 
1 Vietnam 
8 USA 4 UK 2 China 2 France 2 Poland 1 Brazil 1 Thailand 1 Congo 1 Malaysia 1 Vietnam