From The Economist
NOBODY knows exactly when Islamic scholars decided that booze was sinful. In the 1970s political Islam led some countries such as Iran and Pakistan to ban alcohol, although many do not and exceptions are made for non-Muslims. In some countries the punishment for Muslims caught quaffing are severe: 80 lashes in the case of Iran. Things may get more arid yet as Islamist parties from Indonesia to Tunisia moot restrictions on alcohol. The number of drinkers varies by country, but some put the total at 5% of those identifying themselves as Muslim.