comparable western economies. This is also evident in Norway's low Gini coefficient. The state has large ownership positions in key industrial sectors, such as the strategic petroleum sector (Statoil and Aker Solutions), hydroelectric energy production (Statkraft), aluminium production (Norsk Hydro), the largest Norwegian bank (DnB NOR), 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 license ownership). Norway is a major shipping nation and has the world's 6th largest merchant fleet, with 1,412 Norwegian-owned merchant vessels.
Referendums in 1972 and 1994 indicated that the Norwegian people wished to remain outside the European Union (EU). However, Norway, together with Iceland and Liechtenstein, participates in the European Union's single market via the European Economic Area (EEA) agreement. The EEA Treaty between the European Union countries and the EFTA countries– transposed into Norwegian law via "EØS-loven"– describes the procedures for implementing European Union rules in Norway and the other EFTA countries. This makes Norway a highly integrated member of most sectors of the EU internal market. However, some sectors, such as agriculture, oil and fish, are not wholly covered by the EEA Treaty. Norway has also acceded to the Schengen Agreement and several other intergovernmental agreements between the EU member states.
The country is richly endowed with natural resources including petroleum, hydropower, fish, forests, and minerals. Large reserves of petroleum and natural gas were discovered in the 1960s, which led to a boom in the economy. Norway has obtained one of the highest standards of living in the world in part by having a large amount of natural resources compared to the size of the population. In 2011, 28% of
