the wine. Trocken refers to dry wine. These wines have less than 9 grams/liter of residual sugar. Halbtrocken wines are off-dry and have 9–18 grams/liter of residual sugar. Due to the high acidity ("crispness") of many German wines, the taste profile of many halbtrocken wines fall within the "internationally dry" spectrum rather than being appreciably sweet. Feinherb wines are slightly more sweet than halbtrocken wines. Lieblich wines are noticeably sweet; except for the high category Prädikatsweine of type Beerenauslese and above, lieblich wines from Germany are usually of the low Tafelwein category. The number of German wines produced in a lieblich style has dropped markedly since the style went out of fashion in the 1980s. In recent years, the Verband Deutscher Prädikatsweingüter (VDP), which is a private marketing club founded in 1910, has lobbied for the recognition of a vineyard classification, but its effort have not yet changed national law. There are also several terms to identify the grower and producers of the wine: Weingut refers to a winegrowing and wine-producing estate, rather craft than industry. Weinkellerei refers to a maturing and bottling facility, a bottler or shipper. Winzergenossenschaft refers to a winemaking cooperative. Gutsabfüllung refers to a grower/producer wine that is estate bottled. Abfüller refers to a bottler or shipper. Industry structure The German wine scene consists of many small craft oriented vineyard owners. The 1999 viticultural survey counted 68 598 vineyard owners, down from 76 683 in Western Germany in 1989/90, for an average size of 1.5 ha. Most of the 40 625 operators of less than 0.5 ha should likely be classified as hobby winemakers. The 2016 viticultural survey counted 15 931 vineyard owners. Two digit decreases of operating owners change the structure. Many smaller vineyard owners do not pursue viticulture as a full-time occupation, but rather as a supplement to other agriculture or to hospitality. It is not uncommon for a visitor to a German wine region to find that a small family-owned Gasthaus has its own wine. Smaller grape-growers who do not wish to, or are unable to, commercialise their own wine have several options available: sell the grapes (either on the market each harvest year, or on long-term contract with larger wineries looking to supplement their own production), deliver the grapes to a winemaking cooperative (called Winzergenossenschaft in Germany), or sell the wine in bulk to winemaking firms that use them in "bulk brands"