id:: 6600f6e8-db20-43a3-8791-7fd25690185a
references:
Decline in happiness inequality: Stevenson & Wolfers 2008b.
Declining Ginis for quality of life: Deaton 2013; Rijpma 2014, p. 264; Roser 2016a, 2016n; Roser & Ortiz-Ospina 2016a; Veenhoven 2010.