The OECD's "Alcohol Consumption" indicator measures the annual sales of pure alcohol in liters per person aged 15 and older. This metric helps assess long-term trends in alcohol consumption across countries. It's important to note that the methodology for converting alcoholic beverages to pure alcohol may vary between nations. Additionally, official data typically do not account for tourist consumption or unrecorded alcohol intake, such as homemade or illegally produced alcohol. While this indicator provides insight into overall consumption patterns, it does not capture harmful drinking behaviors like heavy episodic drinking.