Go Anglosphere!?

Magnesium Skies points to a New Scientist article on teenage pregnancy. While this is a topic I typically don't really ever think about, it is an interesting fact that the top six countries in percentage of females aged 15-19 who gave birth in 2002 are (in decreasing order) the US, UK, New Zealand, Ireland, Canada, Australia: all English-speaking. All of the other countries on the list are highly developed and with the exception of Japan, European: another interesting fact. It would be interesting to see the uncertainties on these percentage points and determine whether this English-speaking phenomenon is significant. Regardless, I personally think this is less interesting than the fact that there seems to be a correlation with economic development (and amount of secularism?: how do you explain Ireland then?)