Grapes are grown in around 100 of the world's more than 200 countries. In most of them, wine is also produced from them to varying degrees. For the production of quality wine, certain climatic and weather conditions are necessary (see under winegrowing suitability). Areas with optimal conditions for viticulture are usually relatively small (see Origin). The following discussion deals with the worldwide areas under vines as well as the worldwide production of wine. The source for this was the OIV Bulletin of the year 2012 (the last year currently published there). The vast majority of vineyards are located in the vine belts from 40 to 50 degrees north latitude and from 30 to 40 degrees south latitude:
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