合ごう計けい特とく殊しゅ出しゅっ生しょう率りつ

noun

total fertility rate; TFR

Demographic term for the average number of children a woman would have in her lifetime, based on current age-specific fertility rates.

• 日本にほんの合ごう計けい特とく殊しゅ出しゅっ生しょう率りつは長ちょう期き的てきに低てい下