who abuses these drugs the most?

Question by SSLYBY(:: who abuses these drugs the most?
do people use caffiene alchohol & tobacco(etc)
more than acid, weed, crack/cocaine (etc)
statistics would be nice.
i want to know for an argument that i have been waging with my mate

Best answer:

Answer by elbigchile
caffine

Know better? Leave your own answer in the comments!