The birth rate among the aristocracy declined to such an extent that the first Roman emperor Augustus (reigned 27 BCE–14 CE) passed a series of laws intended to increase it, including special honors for women who bore at least three children (the ius trium liberorum).
Natalitet je među rimskom elitom toliko opao, da je prvi rimski car Avgust (vladao 30–14. n. e.) doneo niz zakona s ciljem povećanja nataliteta, uključujući i dodeljivanje posebnih počasti ženama koje rode najmanje troje dece (tzv. [[ius trium liberorum).