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Variable units and sources
| Variable | Description | Units | Sources |
|---|---|---|---|
| GDP | Economic growth | GDP per capita constant $US, 2010 | WDI (2021) |
| CO2 | Environmental degradation | Metric Tonnes Per Capita | WDI (2021) |
| GCF | Gross capital formation | % of GDP | WDI (2021) |
| URB | Urbanization | Urban population | WDI (2021) |
| EC | Energy use | Primary energy consumption is measured in terawatt-hours (TWh) | BP (2021) |
