A country’s financial health, among other measures, depends a lot on views of how corrupt its political and financial leaders and systems are rated. (E.g. would you invest in a country where corruption is high, where you can’t record officially and protect in the country’s courts your financial and real estate investments, where corporate and government employees are “on the take,” etc?)
Here are some Corruption Ranking sources of information:
Transparency International (or select an individual country) and read their “What is (and Costs of) corruption” pages. And the Wikipedia page.