Public sense of safety is not only important part of city safety index, but also one key factors of influencing life happiness index of the masses.

The Gross National Happiness looks at the quality of life, how much leisure time you have, what's happening in your community, and how integrated you feel with your culture.

Combining responses to these two questions, Inglehart and colleagues constructed an index of subjective well-being that reflects both happiness and general life satisfaction.