According to a Today Show article:
After poring over data from 140 countries, researchers from The Wharton School concluded that the more money you have, the more satisfied you are with life — and that relationship holds true whether you are a citizen of the United States or of Burundi. As it turns out, the happiness effect isn’t relative; it’s based on a person’s absolute income.
What that means is that your happiness is very dependent on the economic prosperity of the country in which you live. As a general rule, the wealthier a nation is, the happier its citizens are.
Any of you other poor jerks feeling depressed right about now?