The chart shows the percentage of people living in Sweden, who reported having no close friends in 2020. Foreign-born foreigners are at the top with 23,4% reporting no close friendships; 11,6% of Swedish-born people with two foreign parents said they don't have any close friends, as well as 9,6% of Swedes born in Sweden with one Swedish parent and 11,5% of Swedes born in Sweden to two Swedish parents.
The dataset from Statistikmyndigheten refers to the percentage of respondents who reported not having any close friends. The survey dates from 2020 and includes information on respondents' Swedish / foreign background.