67 visiting now: 33 USA 
8 Singapore 
8 Canada 
4 Brazil 
4 China 
3 UK 
2 Germany 
1 Czech Republic 
1 Dominican Republic 
1 Argentina 
1 Taiwan 
1 Turkey 
1 Hong Kong 
1 Netherlands 
1 Poland 
8 Singapore 8 Canada 4 Brazil 4 China 3 UK 2 Germany 1 Czech Republic 1 Dominican Republic 1 Argentina 1 Taiwan 1 Turkey 1 Hong Kong 1 Netherlands 1 Poland