Only 50% in the world have a bank account.
Worldwide only 1/5 report that they have saved on their account, but one of the success stories in developing countries is “mobile money”, or using a mobile phone for payments.
The variance of the bank account rate is huge: between Finland’s 99.65% and Denmark’s 99.73% all the way to less than 5% in some African and Central Asian countries.
The entire report is here:
http://www-wds.worldbank.org/external/default/WDSContentServer/IW3P/IB/2012/04/19/000158349_20120419083611/Rendered/PDF/WPS6025.pdf
Inspired by my good friend Professor Pekka Himanen of Finland, co-founder with me of Global Dignity