There is a great paper on excess mortality during the COVID-19 pandemic that also corroborates this for almost every country that tracks death count.

https://elifesciences.org/articles/69336

Interesting. Those figures actually do not agree with the amount that the Dutch CBS reports, the CBS figures are much worse than the 12% undercount reported in this paper. But the paper is from a while ago already so maybe that explains the discrepancy.