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 bar graph compares the changes in the proportion of Australian ladies in various age ranges , who became first-time mothers in 1966, 1986 and 2006.

Overall

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, the rate of

the

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apply

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women

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after

thirtieth

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their thirtieth

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, who gave birth to

the

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their

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first child, increased in moderate increments

while

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ladies in their youth showed a greater drop over the given time period. Only

women

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in their mid-thirties represented a fluctuation. Females in

the

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their

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mid-twenties and teenagers below 19

initially

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were among the ladies who accounted

the

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for the

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highest level of childbirth in the country, representing 35% and 62% respectively. These figures declined considerably, with a reduction

by

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of

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half and

third

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a third

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in percentage. A bit

elder

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Older

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women

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in the

late-twentieth

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late twentieth

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illustrated an increase, albeit a small, over the four decades period after a brief growth in 1986. The birth rate among adults,

on the other hand

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, increased almost

by

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apply

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five times to around 50% , exhibiting the highest rise. The figure

mature

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of mature

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women

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in their mid-thirties tripled for the time recorded. Interestingly, the later age group females began becoming mothers, reaching 5% of the total which is quite high for their age.