Figure 3.9 | Trends in key scenario characteristics and driving forces as included in the SSP scenarios (showing 5–95th percentiles of the reference scenarios as included in the database in grey shading). Reference (dotted lines) refers to the UN low-, medium- and high-population scenarios (UN 2019), the OECD long-term economic growth scenario (OECD 2021), the scenarios from the IEA’s World Energy Outlook (IEA 2019), and the scenarios in the FAO assessment (FAO 2018).