Vietnam is the most improved country for living conditions over the last decade. Those living on under $1.90 a day has reduced from 20% of the population to 2% since 2009 and the prevalence of undernourishment has fallen from 18% to 11%.
Note: The terms ‘country’ and ‘nation’ are used to refer to the 167 societies included in the Index. These include 166 nations and one Special Administrative Region of China, Hong Kong.
Note on data: From 2011 data for Sudan excludes data for South Sudan, which became a separate country in that year.
Note on methodology: This year the Prosperity Index has been revised and improved following a year-long methodological review, to make it much more policy-focused. This means that the scores and rankings have changed from what we reported in previous editions of the Prosperity Index.