The data shows the average engagement rate for Facebook page photo posts in Belgium, Luxembourg and the Netherlands in 2018. The source states that the engagement rate "compares the number of people who interacted with a post to the total number of unique users to whom that post was served, regardless of whether those users were fans of (i.e. "liked") the page at that time".
As of 2018, the engagement rate average for Facebook page photo posts in the Netherlands was roughly equal to that of Luxembourg, whereas the engagement rate average for Facebook page photo posts in Belgium was the highest in the Benelux region.
