https://www.hesa.ac.uk/data-and-analysis/publications/finances-2015-16/introduction
https://www.imf.org/~/media/Files/Publications/WEO/2018/October/English/c2.ashx?la=en
https://www.kingsfund.org.uk/publications/spending-and-availability-health-care-resources
https://www.whitehouse.gov/wp-content/uploads/2021/05/budget_fy22.pdf