https://www.bloomberg.com/graphics/2019-european-capital-markets/
https://www.consilium.europa.eu/en/press/press-releases/2023/03/22/eurogroup-president-donohoe-s-report-to-the-president-of-the-euro-summit-of-24-march-2023/
https://www.economiesuisse.ch/de/print/pdf/node/48305
https://www.ecb.europa.eu/pub/pdf/ecbu/eb201703.en.pdf?ea7747ab0ef3b038300a8d51a3a95313