New Zealand is culturally diverse. Even at a regional level, there are big differences in ethnic composition… and with an increasingly inter-connected world, ethnic composition is expected to change substantially in the future, particularly in Auckland.
Statistics New Zealand has provided us with sub-national ethnic population projections, by age and sex, from 2013 to 2038 which are well suited to visualisation using stacked area charts. The package ggplot2 in R makes generating these easy.
The following projections assume ‘medium fertility, medium paternity, medium mortality, medium net migration, and medium net inter-ethnic mobility.’ This is considered ‘medium growth’*.
Total New Zealand
Total North Island
Total South Island
*Please see http://nzdotstat.stats.govt.nz for more information.
Subnational ethnic population projections, by age and sex, 2013(base)-2038. Statistics New Zealand. Provided under the creative commons attribution 3.0 New Zealand license.
I have transformed the data into proportions.