63 visiting now: 29 USA 
10 Singapore 
7 Canada 
4 China 
3 Czech Republic 
3 Brazil 
2 Vietnam 
2 Russia 
2 Germany 
2 Hong Kong 
1 Ukraine 
1 Mexico 
1 Cote DIvoire 
1 Argentina 
1 Pakistan 
1 Bangladesh 
1 France 
1 UK 
10 Singapore 7 Canada 4 China 3 Czech Republic 3 Brazil 2 Vietnam 2 Russia 2 Germany 2 Hong Kong 1 Ukraine 1 Mexico 1 Cote DIvoire 1 Argentina 1 Pakistan 1 Bangladesh 1 France 1 UK