Original data files found by following information from Wiki NZ site:


maternalmortality:    (manual selection;  file sent by email)

FURTHER INFORMATION: Data retrieved 17 February 2014 from
http://stats.oecd.org/ > Health > Health Status > Maternal and infant
mortality. Note: The maternal mortality series records very small
numbers so there may be large annual fluctuations, particularly in
countries with low population levels. New Zealand data on maternal
deaths includes both Direct and Indirect Obstetric Deaths, e.g. those
caused by direct complications during pregnancy, labour & puerperium
as well as those caused by previous existing disease that was
aggravated by the physiological effects of pregnancy.


stillbirths:  (manual selection and download)

FURTHER INFORMATION: Data retrieved 7 March 2013 from
http://www.stats.govt.nz/infoshare > Population > Births-VSB > Live
births (by sex), stillbirths (Māori and total population) (Annual-Dec)


births NZ:       (manual selection and download)

FURTHER INFORMATION: Data retrieved 4 December 2012 from
http://www.stats.govt.nz/infoshare/ > Long-term data series > Birth
rates-DFMA (Annual-Dec)


births OECD:     (manual selection and download)

FURTHER INFORMATION: Data retrieved 27 October 2013 from
http://data.worldbank.org/topic/health > Adolescent fertility
rate. OECD average is unweighted