The chart below gives information about the age of women in Australia when they gave birth to their first child in 1966,1986 and 2006

The bar chart compares the proportion giving birth to their first child

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classified

according to

6 different age groups.

Overall

, there was a downward trend in the percentage of first-time mothers aged 30 or under,

while

women aged 30 and over experienced an adverse pattern. In 1966, the rate of women who were aged from 20 to 24 years old when delivering their first child ranked first, at more than 60%,

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nearly double the ratio of young women who were aged 19 or under, at 35%. Over the

40-year-period

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40-year period

, both those under 19 or under and between 20 and 24 saw a significant decline, to 37% and 21%, respectively.

By contrast

, the figure for

25

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the 25

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-30 age group grew sharply from 37% to 53% in 1986 before falling noticeably in 2006, to 43%.

It is clear that

the percentage of 30-34s and 34-39s were first-time mothers witnessed a dramatic increase

since

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the beginning

till

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to

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the end of the period, from 13% to 47% and from 8% to 30%.

In addition

, mothers aged 40 and above just rose slightly from 2% to 4%.