It's been pretty hard to enter Singapore travel wise since the pandemic started. I imagine some of the residents left to be able to travel around.
> “Travel restrictions during the pandemic was the main factor affecting the size of the (citizen) and PR population in 2021, as more (citizens) and PRs were staying overseas continuously for 12 months or more, who therefore were not counted as part of the resident population,” the National Population and Talent Division said.
https://www.channelnewsasia.com/singapore/singapore-populati...
The SG gov has been celebrating this, with some of them going so far as to say that 'foreigners' are 'ballast to be shed' during tougher times. https://twitter.com/wongdouglas/status/1298802033462394881?l...