The IWI looks beyond the traditional economic and development yardsticks of Gross Domestic Product (GDP) and the Human Development Index (HDI) to include a full range of assets such as manufactured, human and natural capital, showing the true state of a nation's wealth and the sustainability of its growth. It aims to show whether we are building or destroying the productive base that supports our well being.
Some country examples:
Australia has an annual GDP growth rate of 2.2% over the last 19 years, but an IWI of only 0.1%.
China – GDP 9.6%, IWI 2.1%
US – GDP 1.8%, IWI 0.7%