This is a really interesting ranking. It also brings to mind another thought...
Burma, instead of (or maybe in addition to) measuring Gross Domestic Product, measures Gross National Happiness.
It would be fascinating to see one of these percentile rankings which, instead of comparing net worth or income, compared some of the other determinants of actual wellbeing.
For example... health (maybe some aggregated score based on severity of health conditions, chronic conditions, etc.)... family & community (maybe an aggregated score based on number of connections, quality of connections, etc.)...
Of course, it would be very hard to reach any universal consensus on how to compose an aggregate score in these areas... and then, even if there were consensus, it would be just as hard to actually measure the population. So, what is easy to measure (income, debt, net worth, etc.) gets measured...
... although it’s not always the most relevant to our actual lives. We’ve probably all read of that study which shows that, although happiness does increase with income, it only does so up to a point (believe it was in the $70k - $100k range), and after that, the effect levels off or diminishes. Other factors presumably predominate beyond a certain point in income (or net worth).