Migration accounted for 4%, while births and deaths accounted for 2%.

Migration accounted for 24.3%, while births and deaths accounted for 5%.

You'd then be saying births account for 220% of the increase, which is impossible.

New Zealand's fertility rate of 2.1 is relatively high for a developed country, and natural births account for a significant proportion of population growth.

In fact, twin births now account for more than 3 percent of all births.

Migration accounted for 21%, while births and deaths accounted for 6.6%.

Migration accounted for 19%, while births and deaths accounted for 6.4%.

Migration accounted for 12.2%, while births and deaths accounted for 3%.

Migration accounted for 17%, while births and deaths accounted for 0.3%.

Migration accounted for 10%, while births and deaths accounted for 4.9%.