SWB

Contrary to popular belief, that doesn't stand for "single white bunny". SWB stands for "subjective well-being".

From the University of Leicester's School of Psychology:

"This underlying state is conceptualised as a sense of satisfaction with one’s life, both in general and in specific areas of one’s life such as relationships, health and work."

I read an article about the study in The Futurist magazine and was able to track down the paper and complete ranking of countries' scores on the Satisfaction With Life Scale here. Denmark and Switzerland tie for 1st place with a 273, followed by Austria, Iceland, Bahamas, Finland, and Sweden. USA is a little bit down the list with a score of 247, but comfortably ahead of the miserable French, at 220. It will come as no great shock that the bottom of the list is comprised of African and former Soviet Bloc countries, where health problems and poverty abound.