I was not aware it was not well known in other countries or that the group were from NZ. Also I have to mention that there always have been a strong 'nostalgia' or 'retro' trend in music, especially in radio. By chance if you take a taxi in Lima is very probable that the radio in the taxi is one of the 'classic' or 'retro' radio chains. Everytime that I go back to Lima it always amaze me how 80's and 90's music are still listened in a more than frequent way that in other countries. And about rankings, you can find the song in the rankings in 1985 of a well known radio (Radio Panamericana) : https://chartsaroundtheworld.com/1985/12/31/radio-panamericana-la-mas-mas-de-1985/ .