From VoxEU – Wellbeing inequality in retrospect

Rising trends in GDP per capita are often interpreted as reflecting rising levels of general wellbeing. But GDP per capita is at best a crude proxy for wellbeing, neglecting important qualitative dimensions.

via Wellbeing inequality in retrospect — VoxEU.org: Recent Articles

To elaborate further on the topic, Prof. Leandro de la Escosura has made available several databases on inequality, accessible here, as well as a book on long-term Spanish economic growth, available as open source here