The German wine classification system puts a strong emphasis on standardization and factual completeness, and was first implemented by the German Wine Law of 1971. Nearly all of Germany's vineyards are delineated and registered as one of approximately 2,600 Einzellagen ('individual sites'), and the produce from any vineyard can be used to make German wine at any quality level, as long as the must weight of the grapes reaches the designated minimum level. As the current German system does not classify vineyards by quality, the measure of wine ’quality’ is the ripeness of the grapes alone. Approximately 200 wine makers have been organised since 1910 in the Verband Deutscher Prädikatsweingüter (VDP). To counter the shortcomings of the 1971 law, the VDP nowadays classifies the best vineyards by its own rules into 'VDP.Grosse Lage' (Grand cru) and 'VDP.Erste Lage' (Premier cru) based on 19th century Prussian tax maps. Most of these wine makers are based in the regions of Mosel, Pfalz, and Franken. The classification of wines has been reorganized since 1 August 2009 by the EU wine market organization. The traditional German wine classification remained mostly unchanged, as the European system follows the origin-related system like in Germany and most areas of France (AOC). The already existing protection of geographical indication was transmitted through this step as well to the wine classification. Quality designations There are two major categories of German wine: table and "quality" wine. Table wine includes the designations Deutscher Wein (previously Tafelwein) and Landwein. Unlike the supposed equivalents of "Vin de Table" / "Vino da Tavola" and "Indicazione Geografica Tipica" / "Vin de Pays", production levels are not high, and these wines are typically exported to the United States. In 2005, Tafelwein and Landwein only accounted for 3.6% of total production. In Baden, there is a growing trend to release high-end wines as Landwein . Quality wine is divided into two types: Qualitätswein, or quality wine from a specific region. This is wine from one of the 13 wine-growing regions (Anbaugebiete), and the region must be shown on the label. It is a basic level of everyday, mostly inexpensive quaffing wines. The grapes are at a fairly low level of ripeness, with must weights of 51°Oe to 72°Oe. The alcohol content of the wine must be at least 7% by volume, and chaptalization (adding sugar to the unfermented grape juice to boost the final alcohol level, which