Wouldn’t it be nice to live in the happiest country in the world? But how do you measure a country’s happiness? Well the United Nations Sustainable Development Solutions Network (UNSDSN) thinks it knows how. Each year they conduct a survey and rate over 150 countries on the factors of GDP per capita, social support, freedom to make life choices, life expectancy, corruption and generosity. The survey for 2013 found that Europe has most of the top 10 happiest countries while Africa has some of the least happy countries.