Finland has been named the world’s happiest country for the fifth year in a row in an annual report index, sponsored by the United Nations. Afghanistan was ranked as the unhappiest country in the world, with Lebanon closely following it.

Serbia, Bulgaria and Romania have moved up the most on this list, which was published on Friday, while Lebanon, Venezuela and Afghanistan suffered the greatest decline.

Serbia was ranked the 48th in last year’s world happiness index, and now it is in the 43rd place.

World Happiness Report, which has been published for ten years, is based on citizens’ own assessments of their happiness, as well as on economic and social data. Countries are ranked on a scale of zero to 10 on the basis of three-year average data.

In addition to individual sense of happiness and well-being, when calculating the happiness index, gross domestic product, personal freedom and corruption levels are also taken into consideration.