Iceland - widely considered one of the great societies on earth - uses anti-depressants as much as the US.
Here's next in line on the list of anti-depressant usage (in order of use):
Australia (10% lower usage than the US), Canada, Denmark, Sweden, Portugal, UK, Finland, Belgium (30% lower usage than the US)
Most of the countries with the highest standards of living on earth, have the highest rates of anti-depressant use. The sole exception to this are Japan and South Korea, which have particularly low rates of use due to a cultural aversion (even though Japan has a notoriously high suicide rate).
Poor and middle-tier countries can't afford routine anti-depressant use. Income levels map very nicely to anti-depressant usage. US, Iceland, Australia, Canada, Denmark, Sweden are 6 of the 8 or so highest median income nations (Norway doesn't track as well, it's down the ranking), and they're the top six anti-depressant users.