That data is either wrong or severely outdated. The Economist website [1] has Sweden's excess deaths per 100k at 102 (not 13). While better than the US -- which was also not really locked down as other commenters state -- it is 5x worse than neighboring Finland, and infinitely worse than neighboring Norway and Denmark (which had negative excess deaths during the pandemic).

[1] https://www.economist.com/graphic-detail/coronavirus-excess-...