44 visiting now: 38 USA 
4 China 
3 Russia 
2 UK 
1 Malaysia 
1 Canada 
1 Singapore 
1 Czech Republic 
1 France 
1 Germany 
1 Australia 
4 China 3 Russia 2 UK 1 Malaysia 1 Canada 1 Singapore 1 Czech Republic 1 France 1 Germany 1 Australia