http://countryeconomy.com/ratings
https://english.news.cn/20260119/a8bcb301ed704bd3bc2883cd3b6a77da/c.html
http://ec.europa.eu/transport/sites/transport/files/pocketbook2016.pdf
https://www.brookings.edu/essay/why-are-fossil-fuels-so-hard-to-quit/?utm_campaign=Brookings%20Brief&utm_medium=email&utm_content=89176716&utm_source=hs_email