In speaking of wealth we are returning to the ideas of the classical economists, who viewed land, labor, and produced capital as the primary factors of production. The estimates presented here measure total wealth as composed by:
- Produced capital - the sum of machinery, equipment, structures (including infrastructure), and urban land;
Natural capital - including land resources, forests and sub-soil assets;
Intangible capital - a wide array of assets such as human capital, quality of institutions, and governance.
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