The twenty happiest countries

According to the study by Adrian White the twenty happiest countries are (the world map of happiness):

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 interesting data: USA (23), France (62), China (82) Japan (90), India (125). This seems like a good list of places to travel to. I am thinking about spending my next vacation in Costa Rica (ranked 13th).