Covid data is compared to average over 2015-2019. Fair enough. I wonder whether it makes any sense to compare pre- and post-vaccination data in the covid 19 years. First vaccine was approved in Dec 2020, I believe; vaccines were available for masses in Q1, or rather Q2 2021. 

oliverweiss

charts_and_numbers

Excess mortality crisis in some parts of the world

398ja

I don't remember the exact official definition, but I think 2019 is the baseline.
Dr Campbell has mentioned it several times in his videos on the subject