Like all metrics, they fluctuate over time. But they've remained pretty for decades stable at around 10 per 100k per year. The recent rise doesn't really coincide with social media adoption. By 2008, >80% of teens were using social media. If social media adoption was driving the increase in suicides, we would have started to see a rise in suicides around the early 2000s, reaching it's peak around 2008. But that adoption of social media by teens was coupled with a decrease in suicides. The more recent rise in teen suicides occurred during a period of largely flat teen social media adoption (because nearly 100% of them were already on social media by the end of the 2000s).

This idea of teen suicide painting a clear picture about the impact of social media just isn't borne out by the data. And lastly, people ought to remember that teens have the lowest rate of suicide among any age cohort.