Qatar is one of the wealthiest countries in the world in terms of GDP per capita. Qatar's economy is highly dependent on oil and gas extraction which accounts for more than 50% of GDP, 85% of export earnings, and 70% of government revenues. Since proven oil and gas reserves are estimated to sustain current production levels only for the medium run, the government has been making efforts to diversify the economy into a sustainable long-term income model. This includes investments in the petrochemical sector, promotion of a business tourism sector and reforms in its financial sector.