This graph shows three per capita (per person) measures of income growth over time. From 1992 to 2008 the gross domestic product (GDP) grew by 143% or 5.7% per year. But taking into account population growth and calculating the growth of GDP per person, the growth is 4.5% per year. The top line of the graph shows GDP per capita. If the effect of inflationary price changes over these years is removed, this produces a volume GDP per capita increase of 2.1% per year, shown in the middle line of the graph. The bottom line shows the real gross national disposable income (RGNDI). This adjusts the real GDP for the net transfer of earnings and remittances between New Zealand and the rest of the world. It also takes account of any changes in the terms of trade. In effect this line represents the real purchasing power of the incomes of New Zealand residents, with growth of 2.4% per year.
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Source: Statistics New Zealand