Since World War II, Norway has experienced rapid economic growth, and is now amongst the wealthiest countries in the world.[2][3][4] Norway is the world's third largest oil exporter after Russia and Saudi Arabia and the petroleum industry accounts for around a quarter of GDP.[5] It has also rich resources of gas fields, hydropower, fish, forests, and minerals. Norway was the second largest exporter of seafood (in value, after China) in 2006.[6] Other main industries include food processing, shipbuilding, metals, chemicals, mining and pulp and paper products. Norway has a Scandinavian welfare system and the largest capital reserve per capita of any nation.