German wine is primarily prouced in the southwest of Germany, along river Rhine and its tributaries, with the oldest plantations going back to the Roman era. Approximately 60 per cent of the German wine production is situated in the federal state of Rhineland-Palatinate, where 6 of the 13 regions (Anbaugebiete) for quality wine are situated. Germany has about 102,000 hectares (252,000 acres or 1,020 square kilometers) of vineyard, which is around one tenth of the vineyard surface in Spain, France or Italy. The total wine production is usually around 9 million hectoliters annually, corresponding to 1.2 billion bottles, which places Germany as the ninth largest wine-producing country in the world.White wine accounts for almost two thirds of the total production.