Number of direct users mysteriously spikes in US & NL

https://metrics.torproject.org/userstats-relay-country.png?start=2019-11-08&end=2020-02-06&country=us&events=off

https://metrics.torproject.org/userstats-relay-country.png?start=2019-11-08&end=2020-02-06&country=nl&events=off

Seems to follow the same pattern as well. I've checked the other top 10 countries but none seems to be affected by this.