According to the CIA, the industry accounts for 45,2% of the GDP and only 1,7% belongs to agriculture. Oman's key industry sectors include crude oil production and refining, natural and liquefied natural gas (LNG) production construction, cement, copper, steel, chemicals and optic fibre. Oman's services sector accounts for 53% of the GDP, especially in tourism which remains one of the focus sectors in the diversification strategy of the economy.