As we can see, it clearly is. The more developed the country, the more people are happy about living in it. But this particular index of happiness does not measure daily emotional experience, so, this “happiness” is not about being euphoric and excited, it’s more about overall reflection on life. Then it makes sense, that being healthy, literate and having money makes a person happy.
What: Human Development Index compared to Happiness score from World Happiness Report
Where: Countries that have both statistics.
Source: WHR and UNDP