The World Happiness Report 2016 Update, which ranks 156 countries by their happiness levels, was released in Rome in advance of UN World Happiness Day, March 20th. The widespread interest in the World Happiness Reports, of which this is the fourth, reflects growing global interest in using happiness and subjective well-being as primary indicators of the quality of human development. Because of this growing interest, many governments, communities and organizations are using happiness data, and the results of subjective well-being research, to enable policies that support better lives.