जिगु जौथायआव आथोनारि थै गनाया 18 - 20 बैसोनि गेजेराव जाजेनोमोन , नाथाय 1960 सो निफ्राय , बियो 14 बैसोनि गेजेराव हायख्लायबोबाय , आरो दानिया गिबिआ 8 - 10 बैसोआव जाजेनो ।
In the nineteenth century menstruation started around 18 20 years of age whereas in the 1960s it had dropped to around age 14 and now first takes place at age 8 10 .