Only four on the entire planet. Ukraine, South Korea, Malaysia, and the United States. All other countries(out of like 200) have lower drinking ages, and many don't have any drinking age at all.

Canada has reduced their drinking age to 19.

3.81% of adult are alcoholics due from earlier drinking problems.

24% of legal drinkers are heavy drinkers.

20% car crashes from the ages of 21 and younger are due to intoxication.