Offshore hydrocarbon deposits were discovered in the 1960s, and development began in the 1970s. Norway is now the world's third-largest gas exporter and provides much of Europe's crude oil and gas requirements. In 2003, Norwegian oil and gas exports accounted for 56% of total merchandise exports. In addition, offshore exploration and production have stimulated onshore economic activities. Foreign companies, including many American ones, participate actively in the petroleum sector. | Offshore hydrocarbon deposits were discovered in the 1960s, and development began in the 1970s. Norway is now the world's third-largest gas exporter and provides much of Europe's crude oil and gas requirements. In 2003, Norwegian oil and gas exports accounted for 56% of total merchandise exports. In addition, offshore exploration and production have stimulated onshore economic activities. Foreign companies, including many American ones, participate actively in the petroleum sector. |