Many developed countries around the world are no stranger to immigration, but immigration on this scale? This is certainly a visionary plan, but I can't even imagine the sort of tensions between native-born Czechs and newcomers that might arise because of it. But at least we know one thing for certain: if this many people from the developing world find the Czech Republic attractive enough economically and socially to consider emigrating there, the country truly has entered the ranks of the first world. And just 20 years after the end of communism!

http://www.praguepost.com/articles/2008/04/09/foreigners-could-make-up-30-percent-of-country-by-2050.php