You really think that they only count on sg ppl to increase the population.
Wait till they open fully the cranes for the chinese immigration.
First, universities to form them. Let's get the smart ones. Second, welcome the rich businessmen to settle in a clean, safe and efficient place.
Finally, All kind of good reasons to get the chinese skilled workers that are smart and willing to get a better (but still cheap) salary here.
I have nothing against immigration or chinese people. And I do NOT say it is a bad thing. But this is where some of the energy will and must come from in order to increase the numbers.
Slowly and you will not perceive it so soon.