IEA (2023), Annual primary energy intensity improvement, 2010-2023 and in the Net Zero Scenario, 2022-2023, IEA, Paris https://www.iea.org/data-and-statistics/charts/annual-primary-energy-intensity-improvement-2010-2023-and-in-the-net-zero-scenario-2022-2023, Licence: CC BY 4.0