https://www.bruegel.org/sites/default/files/2022-11/PC%2020%202022_4.pdf
https://data.oecd.org/natincome/net-lending-borrowing-by-sector.htm
https://www.foreignaffairs.com/united-states/2008-crisis-never-saw-coming
https://www.bbc.com/news/world-europe-54964858