22 visiting now: 10 USA 
5 Vietnam 
1 Iran 
1 China 
1 Sweden 
1 Indonesia 
1 Bangladesh 
1 Iraq 
1 Brazil 
5 Vietnam 1 Iran 1 China 1 Sweden 1 Indonesia 1 Bangladesh 1 Iraq 1 Brazil 5 Vietnam 1 Iran 1 China 1 Sweden 1 Indonesia 1 Bangladesh 1 Iraq 1 Brazil