18 visiting now: 8 USA 
3 China 
2 Belgium 
1 South Africa 
1 Nigeria 
1 Germany 
1 Vietnam 
1 Ecuador 
3 China 2 Belgium 1 South Africa 1 Nigeria 1 Germany 1 Vietnam 1 Ecuador 3 China 2 Belgium 1 South Africa 1 Nigeria 1 Germany 1 Vietnam 1 Ecuador