You don't even need to make any calculations really, just take a quick look at the table to see that the death rate was unusually low 2019 and only slightly high in 2020 (Edit: sorry, almost compensated by 2019's low numbers, not completely). And if you go back in time, you can see that in fact every single year between 1999-2012 had a higher mortality rate than 2020.

Yes, I see that. I calculated the mortality rate for all years, then the average and standard deviation for the last 10 years preceding 2020.

The average is 0.92%, standard deviation is 0.03%. The mortality rate in 2020 was 0.95% or exactly one standard deviation above the average for the last 10 years.

There is also another clear trend from the data which is slowly but steadily declining mortality rates. Obviously since 1749, but this trend is especially noteworthy during this century (since 2000). Then only one year has increased mortality (by more than one least significant digit) which is 2020.

2020 saw 10% higher mortality than 2019.

So to conclude: I'm by no means a statistician but I'd say this is probably not a random fluke.