In North America, approximately 95% of adults over the age of 25 have a bank account. In the developing world, that number is only about 52%.
source https://www.google.com/url?rct=j&sa=t&url=https://aws.amazon.com/blogs/architecture/tag/cryptocurrency/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNEOewwM_HY9mG-i10e2xFMoU_1iGg
