44 visiting now: 28 USA 
6 Germany 
3 Canada 
3 Hong Kong 
2 China 
1 Netherlands 
1 Russia 
1 France 
1 Singapore 
1 UK 
1 Austria 
1 Iran 
6 Germany 3 Canada 3 Hong Kong 2 China 1 Netherlands 1 Russia 1 France 1 Singapore 1 UK 1 Austria 1 Iran