Comment by rayiner

Singapore has also somehow maintained a supermajority Chinese population consistently since the 1970s: https://en.wikipedia.org/wiki/Demographics_of_Singapore (77% in 1970, 74.3% in 2020). That is even though the predominantly Muslim Malay population has had much higher total fertility than the Chinese population since 1980: https://www.researchgate.net/figure/Total-Fertility-Rate-Per....

It seems like Singapore uses its immigration system in a deliberate way to maintain the political power of the dominant cultural group.