Bloomberg: Harvey May Be Among the World’s Costliest Recent Catastrophes

https://www.bloomberg.com/graphics/2017-costliest-insured-losses/?utm_content=economics&utm_campaign=socialflow-organic&utm_source=twitter&utm_medium=social&cmpid%3D=socialflow-twitter-economics

2004 Indian Ocean earthquake and tsunami
https://en.wikipedia.org/wiki/2004_Indian_Ocean_earthquake_and_tsunami

List of disasters by cost https://en.wikipedia.org/wiki/List_of_disasters_by_cost

Countries by GDP: https://en.wikipedia.org/wiki/List_of_countries_by_GDP_%28nominal%29