[KineticLensman]

> All China has to do is wait for 30 years - half of the island's population will perish of old age by then, the remaining 2/3 will be retirees

So, like China itself, which is aging faster than almost all other countries in modern history [0]. In 30 years (~ 2050), the proportion of Chinese over retirement age will become 39 percent of the total population.

[0] https://en.wikipedia.org/wiki/Aging_of_China