Reality doesn't show at all what you are attempting to portray by that chart.
Typically if you are going to present something like this you ought to provide a link to your source, so that we can see for ourselves the context.
Here is a site for you
Sweden: death rate 2010-2020 | Statista
It shows the total deaths in Sweden for years 2011-2020. We won't count 2021 because it is only a partial year.
2011 - 89,938
2012 - 91,938
2013 - 90,402
2014 - 88,976
2015 - 90,907
2016 - 90,982
2017 - 91,972
2018 - 92,185
2019 - 88,766
2020 - 98,124
It is quite clear looking at these facts that 2020 was an obvious outlier with the previous years ranging from 88,766 to 92,185 and giving an average yearly death rate of 90,674. 2011-2019 A range of 3,400 over a period of 9 years with no clear upward or downward trend. But then all of a sudden 2020 came (with the Covid pandemic) and there was the highest death rate of the previous 9 years with 98,124 which is well above the average by 7,450 and above the max from the previous 9 years by a staggering 5,939 and an increase on the previous year by 9,358.
By overall deaths Sweden had a disastrous year in 2020. If someone looked at these stats and didn't know about the pandemic, they would immediately point to 2020 and ask "What the hell happened there?" - this was most likely due to the pandemic and Sweden's disastrous do nothing response to the pandemic.
When you look to what happened in Denmark over the same period
Denmark: number of deaths 2020 | Statista
2011 - 52,516
2012 - 52,325
2013 - 52,471
2014 - 51,340
2015 - 52,555
2016 - 52,824
2017 - 53,261
2018 - 55,232
2019 - 53,958
2020 - 54,645
The 9 years of 2011 to 2019 gave a range of 3,892 from 51,340 to 55,232 and an average yearly death rate of 52,942. 2020 for Denmark did not reach the maximum of the previous nine years which happened in 2018. It was an increase on the previous year by 687 and an increase on the average over the past 9 years of 1,702. 2020 was not an outlier. A person looking at these stats would not be immediately drawn to 2020.
The data for Norway shows a better story for 2020 than for Denmark
2020 was not an outlier, the highest death rate year was 2012 of 41,992 whereas the death rate in 2020 was 40,612 which was lower than the previous 5 years.
The data shows a similar story for Finland although the chart is per 1,000 inhabitants rather than a total count
Finland - death rate 2010-2020 | Statista
2020 was not an outlier, 2018 had a higher death rate.
By all accounts Sweden failed its people in 2020 by doing almost nothing to combat the deadly pandemic leading to several thousands of unnecessary deaths.