42 visiting now: 24 USA 
8 Singapore 
2 China 
2 UK 
1 Russia 
1 Czech Republic 
1 India 
1 Ukraine 
1 Korea 
1 Australia 
1 Pakistan 
1 Belgium 
8 Singapore 2 China 2 UK 1 Russia 1 Czech Republic 1 India 1 Ukraine 1 Korea 1 Australia 1 Pakistan 1 Belgium