> In 1950, there were 2.7 suicides per 100,000 15- to 19-year-olds. Today, there are 7.5 (though that’s down from a 1990s peak of 13.2).

Little typo, looking at the link it's 11.2 not 13.2. Someone knows why this peak?

One factor is definitely underreporting. Several “accidental deaths” in the 1950s were code for suicide.