Debts make this comparison difficult to make meaningful.
A few cases:
- Minimum wage earner barely scrapes by but does not seek any credit.
- Someone in a high cost of living area takes out a mortgage.
- A young neurosurgeon with fresh educational debt takes on a very high paying job.
- A billionaire borrows to finance a major real estate project
The net worth of these cases goes from highest to lowest. The "means" run in the opposite direction.
Sometimes indebtedness is poverty. Sometimes it's consumption smoothing. Sometimes it's a reasonable investment in a home or earning potential. Sometimes it's a dangerous source of leverage on a foolish bet.
I don't know how we disentangle all those when trying to measure or compare human welfare.
> the strength of the US dollar [also contributed]
If high Swiss property values and a strong US dollar conspire to to flip the #1 and #2 countries on this specific metric, I'm worried we're drifting into Spaceballs territory. What's all this mean? Possibly... absolutely nothing.