67 visiting now: 31 USA 
8 Singapore 
4 Brazil 
4 Bangladesh 
3 Canada 
3 Spain 
3 China 
2 India 
2 Germany 
1 Iran 
1 Iraq 
1 Turkey 
1 Japan 
1 Costa Rica 
1 Argentina 
1 Kenya 
1 Uzbekistan 
1 Latvia 
8 Singapore 4 Brazil 4 Bangladesh 3 Canada 3 Spain 3 China 2 India 2 Germany 1 Iran 1 Iraq 1 Turkey 1 Japan 1 Costa Rica 1 Argentina 1 Kenya 1 Uzbekistan 1 Latvia