https://www.fraserinstitute.org/sites/default/files/economic-freedom-of-the-world-2021.pdf
https://www.unodc.org/res/WDR-2023/WDR23_Exsum_fin_SP.pdf
https://www.diw.de/documents/publikationen/73/diw_01.c.578096.de/18-7-3.pdf
https://www.brookings.edu/blog/up-front/2020/03/02/the-future-will-be-shaped-by-what-global-productivity-growth-does-next/?utm_campaign=Brookings%20Brief&utm_source=hs_email&utm_medium=email&utm_content=84171029