One-fifth of Canadians immigrants / BBC News, 5 December 2007
http://news.bbc.co.uk/2/hi/americas/7128172.stm
"Twenty per cent of people living in Canada are foreign-born, a proportion second in the world only to Australia, new census data reveal."
2006 Census: Immigration, citizenship, language, mobility and migration / Statistics Canada, 4 December 2007
http://www.statcan.ca/Daily/English/071204/d071204a.htm