Top 20 richest countries in the world for 2016- See where Nigeria is despite recession

4. Norway

Norway is blessed with abundant natural resources, from oil and hydropower to minerals and forests. Aside from providing its people with per-capita income of $53,396, an extensive social welfare net is also in place. It is one of the largest exporters of oil and gas in the world, with revenues from the petroleum industry accounting for a fifth of the government’s revenue.

5. Brunei

With per-capita income of $49,536, Brunei makes good use of its substantial crude oil and natural gas reserves. Citizens are entitled to free medical services and education up to the tertiary level. Housing is also subsidized. To further boost its income, the government has also taken advantage of investment opportunities abroad.