The world health report 2001 by WHO (World Health Organisation)

They are really useful to get a picture of the current and future Mental Health in the World.

"The world health report 2001 - Mental Health: New Understanding, New
Hope" by WHO (World Health Organisation)

- Full report [pdf 2.56MB] (169 pages)
*It contains all the chapters(1-5) and Statistical annex.

World health report 2001 press kit

*4 Fact sheets in the above press kit are also good for getting an idea
of Mental Health on a global scale.