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The population of New Zealand has exploded, seeing its largest ever increase for a June year according to the latest statistics released today.
A report from Stats NZ shows the population grew by 100,400 in the year ended June 2017.
The report also shows that New Zealand's estimated resident population is 4.79 million at 30 June 2017.
Net migration (arrivals minus departures) contributed 72,300 people to the growth, along with 28,100 from natural increase (births minus deaths) Stats NZ said.
"Our current net migration rate is high by New Zealand standards, but historically it has fluctuated more than other countries," population statistics senior manager Peter Dolan said.
"At the moment we're experiencing rates similar to Australia's in 2009."
Mr Dolan says most migrants are arriving on short-term work and student visas but are then choosing to extend their stay long term, which then makes sense to count them as long-term stayers and add them to the population count.
"Half of last year's growth was in the 15–39 age group," Mr Dolan said.
"This reflects the contribution of migration to our population growth, with net migration of 50,000 among those aged 15–39 years."