Reminder that "suicide" has a lot of gray areas, and when less stigmatizing labels exist, officials may choose to apply those instead.
On one hand, we have deaths such as by overdose or auto accident that may be labelled as accidental, but were in fact a suicide.
On the other hand, there are deaths which may be quickly closed as a suicide, but where the details suggest some other kind of foul play.
All this to say, that any comparison between to between countries is to be taken with a margin of error, because specific interpretations and data-collection methods may differ.