This is much more detailed than your original statement. Thank you.

I still think the number is likely nonzero (a word I chose to indicate it may not be a high number but it is not zero) and my earlier point is reenforced: they were forced into it by circumstance, and would have taken another path had it been on offer.

It was most certainly not a "peaceful death".

Edit: I will be honest, some of my reaction came emotionally from offense at the implication that theirs was somehow a "peaceful death" (your words). The USA Today piece you cited says it was officially called "homicide". That is accurate. Assisted suicide is a totally different thing.