How does immigration affect New Zealand's economy?

Answer:
On its own New Zealand has a birth rate of 1.8 which is below the replacement rate. Without immigration the population would decrease and economic opportunity would diminish. Immigration boosts this rate to 2.2 allowing the country to grow.
First answer by Timothy1986. Last edit by Timothy1986. Contributor trust: 2 [recommend contributor recommended]. Question popularity: 17 [recommend question].