http://www.cbi.org.uk/cbi-prod/assets/File/June%202017_CBI%20economic%20forecast%20table(1).pdf
https://www.destatis.de/Europa/EN/Topic/Economy-Finance/Debt.html
https://ukandeu.ac.uk/wp-content/uploads/2020/10/UK-internal-Market-Bill-devolution-and-the-union.pdf
https://www.diw.de/documents/publikationen/73/diw_01.c.670904.de/19-31-3.pdf