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AGE-SPECIFIC FERTILITY RATES
Until the late 1970s, the distribution of fertility rates across age groups was relatively stable, with each age group peaking and troughing together, although peaks were more pronounced for some age groups than others (graph 2.2). Women aged 25-29 years have had the highest fertility rates for most of the 20th century, followed by women aged 20-24 years. Over the past two to three decades, fertility rates amongst younger women have been declining.
The transition to an older age-specific fertility pattern is illustrated by the shift in peak fertility rates, from women aged 25-29 years in 1999 to women aged 30-34 years in 2000. Since then, women aged 30-34 years have continued to record the highest fertility rate of all age groups, with 123 babies per 1,000 women in 2010. Further, since 2003 the fertility rate for women aged 35-39 years has exceeded that of women aged 20-24 years.