Thanks for bringing that up. It's true that autopsies were done only occasionally. But after looking at the autopsy papers, those autopsies were usually conducted when the vaccine is the suspected cause of death, usually referred for judicial autopsy. So, I think the autopsied cases represent the true sample size, albeit small, of likely vaccine injury.
I'd also like to mention that unexplained medical deaths (usually cardiovascular) are quite common, even among the younger age groups and before the pandemic. So, perhaps a substantial proportion of those unexplained deaths in Netherlands may indeed be unexplained deaths we see even before the pandemic, in my humble opinion. Please feel free to correct me if I'm wrong though.
Here're two sources for this:
