sǐ​wáng​lǜ

mortality rate

死亡率 sǐ​wáng​lǜ
mortality rate noun
The ratio of deaths in a given population over a specific period of time, typically one year, expressed as a rate per thousand people

When the birth -rate increases and the death rate drops, the population increases.

Frequency

Movie subtitles
1.31 per million appears in 1% of films
Written text
9.29 per million

Sources