These combined components of change maps indicate the manner in which the individual components of change (natural increase/decrease and the direction of net migration) combine to result in overall growth or decline. For example, often overlooked, positive natural increase regularly offsets accompanying net migration loss to deliver overall growth - but this is changing. The data are drawn from the Royal Society Marsden project The ebbing of the human tide. What will it mean for the people? (project also known as Tai timu tangata. Taihoa e?) and converted for visualisation by the CaDDANZ Population Atlas research team. Projections from 2013 are based on Statistics New Zealand's 2013-base Update, medium variant. See for additional detail and methodological notes.