https://www.cbo.gov/system/files/115th-congress-2017-2018/reports/53651-outlook.pdf
https://wwfeu.awsassets.panda.org/downloads/ets_revenues_report_2022___web___final.pdf
https://www.europarl.europa.eu/doceo/document/A-9-2023-0155_EN.html
https://www.imf.org/-/media/Files/Publications/REO/EUR/2022/April/English/text.ashx