It's currently 25% and efforts are being made to increase the numbers of immigrants.
http://tvnz.co.nz/national-news/quarter-new-zealand-s-population-born-overseas-5931180
I hope the NZ government speeds things up as I have noticed the country is becoming so much more vibrant and exciting with the arrival of new cultures with new ideas.
Singaporeans are lucky to have the PAP government that is capable of moving so much faster compared to the hopeless looneys that run NZ.
Of course the fact that SG is such an attractive destination to begin makes it so much easier to attract talent from abroad. NZ is struggling in this regard. It is not as well run or as prosperous as Singapore.