The state has large ownership positions in key industrial sectors, such as the strategic petroleum sector (Statoil), hydroelectric energy production (Statkraft), aluminium production (Norsk Hydro), the largest Norwegian bank (DNB), and telecommunication provider (Telenor). Through these big companies, the government controls approximately 30% of the stock values at the Oslo Stock Exchange. When non-listed companies are included, the state has even higher share in ownership (mainly from direct oil licence ownership). Norway is a major shipping nation and has the world's 6th largest merchant fleet, with 1,412 Norwegian-owned merchant vessels.