26 visiting now: 11 USA 
8 China 
2 Russia 
1 South Africa 
1 Taiwan 
1 Germany 
1 UK 
1 Romania 
8 China 2 Russia 1 South Africa 1 Taiwan 1 Germany 1 UK 1 Romania 8 China 2 Russia 1 South Africa 1 Taiwan 1 Germany 1 UK 1 Romania