history of New Zealand

The following response to three questions (in italics) was published in a prestigious Uruguayan weekly newspaper Brecha. It may be of interest because I am responding to the Latin American economic debate which is slightly different from the New Zealand one (but only slightly). Sorry for the included material necessary for an audience outside New Zealand. Thankyou. Nicola, for checking the translation from Spanish

1. New Zealand had a downward trend in terms of GDP per capita and fell behind several OECD countries in the last quarter of the 20th century. What are the main factors that explain New Zealand's relative lagging after the 1970s?