台Taivo A Taiwan Mandarin dictionary

人口普查

rénkǒupǔchá

ㄖㄣˊ ㄎㄡˇ ㄆㄨˇ ㄔㄚˊ

Example

根據最新的人口普查，語言的發言人人數好像穩定，或者是甚至在上升。

gēnjù zuìxīn de rénkǒupǔchá yǔyán de fāyánrén rénshù hǎoxiàng wěndìng huòzhě shì shènzhì zài shàngshēng

According to the latest census, the language's number of speakers appears to be stable, or even increasing.

Keep 人口普查 and it comes back until you know it.