University of Leicester produces the first-ever 'world map of happiness'

Happiness is found to be most closely associated with health, followed by wealth and then education.

The 20 happiest nations in the World are:

1. Denmark
2. Switzerland
3. Austria
4. Iceland
5. The Bahamas
6. Finland
7. Sweden
8. Bhutan
9. Brunei
10. Canada
11. Ireland
12. Luxembourg
13. Costa Rica
14. Malta
15. The Netherlands
16. Antigua and Barbuda
17. Malaysia
18. New Zealand
19. Norway
20. The Seychelles

Other notable results include:

23. USA
35. Germany
41. UK
62. France
82. China
90. Japan
125. India
167. Russia

The three least happy countries were:

176. Democratic Republic of the Congo
177. Zimbabwe
178. Burundi

You can view the maps in various formats here.