58 visiting now: 32 USA 
9 Singapore 
5 France 
2 UK 
1 Iran 
1 Colombia 
1 Iraq 
1 Ecuador 
1 Argentina 
1 Saudi Arabia 
1 Finland 
1 Brazil 
1 Canada 
1 Switzerland 
1 Germany 
1 China 
9 Singapore 5 France 2 UK 1 Iran 1 Colombia 1 Iraq 1 Ecuador 1 Argentina 1 Saudi Arabia 1 Finland 1 Brazil 1 Canada 1 Switzerland 1 Germany 1 China