Île-de-France is the wealthiest and most populated regional area in Europe, largely because it contains the city of Paris and its commuter belt: 99% of its population live within this metropolitan area. IBy area, 45% of the region is used for crop farming and 23% is managed forest. However, urban growth is encroaching on these rural areas, gaining 1000 square kilometers over the last 50 years. Services make up a massive 72% of employment, with other major sectors including trade (13%) and industry (10%). If Île-de-France were a country, it would rank as the 15th wealthiest in the world.