The bar chart gives information about that time the first children have been born by mothers in Australia since 1966, 1986 and 2006.
Overall, the number of women being under 24 years old had a child previously took up significant rare, but which decreased in the next few years. By contrast, there was a tent increasing over the years in the age range over 25 years old, additionally, this number only reached trivial rare in 1966.
Regarding this research, the children was born when their mothers under 19 were as equal as the aged between 25 and 30, it stood at approximately 35%. From 1966 to 2006, the woman restricted to early born, so it leads to the percentage of women being under 19 gradually declined over this time, it reached 20% in 1986 and dropped by 20% compared with this initial figure. Nevertheless, the age from 25 to 30 started to give the first child significantly rose to 50% in 1986, it was 30% higher than age under 19 in the smae point. However,there was a sight decrease which remained about 35% in 2006.
The noteworthy number about rare of children who was born by the mothers from 19 to 24 years old, which approximately ocuppied 60% in 1966 and hugely contrasted with the age range over 30 ( this percentage was under 15%). The age over 30 group have trend in which we can clearly see that the rate surged by about 50% in 2006 ( it included 45% at 30-34 group, 30% at 34-39 group and 6% at over 40 group) in 2006. This figures were noticeably higher than 20-24 group, which only stood at 38% in 2006.