The Netherlands is a large net exporter of oil products with a sizeable marine bunker market. BP, ExxonMobil, Shell, Total, Gunvor, and LUKOIL each have an interest in one of the five large oil refineries in the Netherlands. These assets are well located for supplying inland demand as well as the large marine bunkering and export markets. The retail sector remains relatively dense compared to other western European countries with high prices due to the level of taxation on fuel. Retail gross margins remain some of the highest across Europe. The unmanned low-cost segment has seen substantial growth and now represents over 50% of the market. The EG Group has become the Dutch market leader with nearly 600 service stations which are all transitioning to the Esso brand.