As of December 2011 and January 2013, 8,800 foreigners and 5,400 Singaporeans were respectively diagnosed with HIV, but there are fewer than 10 annual deaths from HIV per 100,000 people. There is a high level of immunisation. Adult obesity is below 10%. The Economist Intelligence Unit, in its 2013 Where-to-be-born Index, ranked Singapore as having the best quality of life in Asia and sixth overall in the world.