Monaco has the world's highest GDP nominal per capita at US$185,742, GDP PPP per capita at $132,571 and GNI per capita at $183,150. It also has an unemployment rate of 2%, with over 48,000 workers who commute from France and Italy each day. According to the CIA World Factbook, Monaco has the world's lowest poverty rate and the highest number of millionaires and billionaires per capita in the world. For the fourth year in a row, Monaco in 2012 had the world's most expensive real estate market, at $58,300 per square metre. The world's most expensive apartment is located in Monaco, a penthouse at the Odeon Tower valued at $335 million according to ''Forbes'' in 2016.