https://blogs.imf.org/2019/12/17/new-data-on-world-debt-a-dive-into-country-numbers/?utm_medium=email&utm_source=govdelivery
http://www.oecd.org/eco/outlook/Better-but-not-good-enough-oecd-economic-outlook-presentation-june-2017.pdf
https://www.ccomptes.fr/system/files/2019-04/20190418-refere-2018-4023-plan-relance-autoroutier.pdf