FIFA Women's World Rankings
The first two points result from the FIFA Women's World Rankings system being based on the Elo rating system adjusted for football; in 2018, FIFA modified the men's ranking system to similarly be based on Elo systems after continued criticism. FIFA considers the ratings for teams with fewer than 5 matches provisional and at the end of the list. In addition, any team that plays no matches for 4 years becomes unranked; this inactivity limit was previously 18 months, but was extended in early 2021 (after the COVID-19 pandemic stifled a significant amount of international play).