The line graph illustrates the proportion of groups of female age experiencing first-time chilldbirth in australia from 1966 to 2006.
Overall,the proportion of young females decreased gradually throughout the period. While, the average females increased steadily. Over 40 age females remain unchanged in the end of the period.
In detail,the figure for under 19 was just over 30% in entire period. Afterwards, it registered an enourmous reduction to 20% in two decades. Followed by, it reached a low of 12% in the end of the period.Meanwhile, 19-24 age females was higher with 62% at first. Then, it decreased gradually until given the end of the period.Simultaneously the index for 25-30 underwent wild fluctuation and stand with approximately 38% in 2006.
The figure for 30-34 rose slightly throughout the period. In addition , 34-39 was 8% in the beginning period. After that, it grew gradually to 16% in the middle of the period. Then, it continued an upward trend until 2006. Apart from, the figure for over 40 remain unchanged throught period.
