The supplied bar chart represents data about females in different age that gave a birth to the first child in Australia in the year 1966, 1986 and 2006.

The chart illustrates the percentages of

women

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, based on their maturity, who gave birth to their first child in three different

years

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, which are 1966, 1986, and 2006. From the diagram, it can be seen that the tendency of young adults to have children has been decreasing,

while

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the percentage of

women

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in their 25s has been stagnant over the

years

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.

However

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, the proportion of

women

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in other

age

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groups fluctuated significantly and didn't have a certain trend. In the year 1966, it is shown that the second fraction of females clearly dominated other

age

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groups with around 60% of them having their first child in their early 20s. Despite a decrease 20

years

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later, the domination of

this

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group still continued with roughly 50% of them still documented in the data. After being the biggest portion for

years

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,

this

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age

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group was overtaken by the early 30s

women

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in 2006 who got a constant increase over the

last

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40

years

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.

Besides

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the gradual decline of the former group, the trend of

women

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in their adolescent

years

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giving birth to a child had

also

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declined, starting from over 30% in 1966 to slightly over 10% in 2006.

On the other hand

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, the

women

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in their late 20s and 30s experienced a fluctuating direction over the

years

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,

whereas

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the

women

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with the

age

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older than 40 had the smallest portion of the information given.