The current edition of the journal Nature has a focus on depression - with a summary of research progress, and lack thereof. There are some good graphics in it, link to the graphics here. On the global rankings, Canada is slightly below the global mean for depression prevalence. Another thing that is clear - the research funding that goes to depression is out of line (way below) its place as the world's leading cause of disability. It is too bad that all of this came out at the same time that a spacecraft was landing on a comet.