How complex is suicide and something else I didn't know

The suicide rate in Sri Lanka is 5 times the UK's and has risen 700%
since the 1960s. (http://www.bmj.com/cgi/content/abstract/317/7151/133
and http://www.bmj.com/cgi/content/full/328/7430/42?eaf - two papers
from the first page of a google scholar search for "sri lanka suicide" -
http://scholar.google.co.uk/scholar?q=sri+lanka+suicide&hl=en&btnG=Search&as_sdt=2001&as_sdtp=on
<http://scholar.google.co.uk/scholar?q=sri+lanka+suicide&hl=en&btnG=Search&as_sdt=2001&as_sdtp=on>)

I thought it was because of the war. It turns out that's not true, at
least from the abstract of this paper
(http://www3.interscience.wiley.com/journal/119230966/abstract - also
from the same search).

"
A study on the effect of war on the suicide rate in Jaffna town for the
10-year period from 1980 to 1989 is reported. There was a marked drop in
the suicide rate during the war, notably among males and youth. An
inverse relationship between suicide and homicide rates was shown in the
overall trends, particularly in 1987. It is hypothesized that war may
function as an alternate to suicide. The use of agrochemicals for
suicidal purposes declined during war, while alary seeds became more
popular. The method chosen may reflect availability and cultural popularity.
"