I think even 2% is too high.

The diagnosis of ADD was instead of, rather as well; once it was discovered the real reason for their poor concentration or misbehavior, the ADD diagnosis disappeared. For that, I am glad that medication is not prescribed often in Oz. One friend in high school had "ADD", when in turn was abuse, and the meds didn't work so well for him.

I will point out that I don't actually know anyone who has ADD/ADHD, so I have no knowledge of how well drugs work for those that may need it.