An alcoholic drink, or alcoholic beverage, is a drink that contains a substantial amount of ethanol (informally called alcohol), a depressant which in low doses causes euphoria, reduced anxiety, and sociability and in higher doses causes intoxication (drunkenness), stupor and unconsciousness. Long-term use can lead to alcohol abuse, physical dependence, and alcoholism. Drinking alcohol plays an important social role in many cultures. Most countries have laws regulating their production, sale, and consumption;some countries ban such activities entirely. However, alcoholic drinks are legal in most parts of the world. The global alcoholic drink industry exceeded $1 trillion in 2014. Alcohol is one of the most widely used recreational drugs in the world. In the United States 89% of adults have consumed alcohol at some point in time, 70% have drunk it in the last year and 56% in the last month. Alcoholic drinks are typically divided into three classes—beers, wines, and spirits—and typically contain between 3% and 40% alcohol by volume. Discovery of late Stone Age jugs suggest that intentionally fermented drinks existed at least as early as the Neolithic period (cir. 10,000 BC). Many nonhuman animals also consume alcohol when given the opportunity and are affected in much the same way as humans, although humans are the only species known to produce alcoholic drinks intentionally.