Norway's abundant energy resources represent a significant source of national revenue. Crude oil and natural gas accounted for 40% of the country's total export value in 2015. As a share of GDP, the export of oil and natural gas is approximately 17%. As a means to ensure security and mitigate against the “Dutch disease” characterized by fluctuations in the price of oil, the Norwegian government funnels a portion of this export revenue into a pension fund, the Government Pension Fund Global (GPFG). The Norwegian government receives these funds from their market shares within oil industries, such as their two-thirds share of Statoil, and allocates it through their government controlled domestic economy. This combination allows the government to distribute the natural resource wealth into welfare investments for the mainland. Tying this fiscal policy to the oil market for equity concerns creates a cost-benefit economic solution towards a public access good problem in which a select few are able to reap the direct benefits of a public good. Domestically, Norway has addressed the complications that occur with oil industry markets in protecting the mainland economy and government intervention in distributing its revenue to combat balance-of-payment shocks and to address energy security.