43 visiting now: 22 China 
15 USA 
1 Japan 
1 Singapore 
1 Kuwait 
1 Myanmar 
1 Iran 
1 Russia 
15 USA 1 Japan 1 Singapore 1 Kuwait 1 Myanmar 1 Iran 1 Russia 15 USA 1 Japan 1 Singapore 1 Kuwait 1 Myanmar 1 Iran 1 Russia