Overall, there was a notable shift in the age patterns of first-time mothers, while females aged 40+ have the lowest chance of getting their first child throughout the given period.
In 1966, the age group of 20-24 registered the highest on the chart with over 60%, followed by the age group of 25-29 and 19 and under with approximately 38% and 35%, respectively. Whereas women who are at the age of 40+ merely have about 3% of getting their first child, contributing the least to the graph. In 1986, changes began to emerge as the age group 25-29 took the lead at 50%, while the 20-24 observed a slump to roughly 38%. During the same period, women aged 30-34 saw a slight increase to about 17%, indicating the trend of giving birth to their first child at a later stage.
The most significant transformation occurred by 2006 when the majority of women giving birth for the first time belonged to the 30-34 age group, which comprised almost 50% of the total. Meanwhile, the figures for 25-29 and 20-24 both decreased to about 40% and 30%, respectively. However, the percentage of women over 40 remained stable at 5%, reflecting that this demographic has not significantly changed in terms of first childbirth over 50 years.