There has been a tendency in recent years to maker stronger wines in marginal vine-growing regions like northern Europe where wines traditionally would have had lower alcohol content, due to perceived market demand, largely driven by the popularity of high strength, fruity new world wines. For example, twenty years ago, Muscadet would typically have had an average strength of about 9.5%, whereas today it's probably more likely to be a few degrees above this. As a general rule, though, this is the place where the lowest alcohol content wines should be found.