Rome, November 14 - A growing proportion of children are being born in Italy to parents who are not married, the national statistics agency reported Wednesday. Last year, about 134,000 births were recorded where the parents were not married, Istat reported. That's in line with 2010 figures, but stands in sharp contrast to the decline in the number of children born to married couples. As a result, fully 24.5% of births were to unmarried parents last year, compared with 23.6% in 2010. Istat also found that almost 7% of births last year were to mothers who were at least 40 years old, while 10.9% of births were to women under 25. For Italian-born mothers, the two age groups were evenly split at 8% each.