11% of ~325 million vs 7% of ~65 million = ~31 million more people using antidepressants in the US than the UK. Also I'd hardly say >10% is reasonably small, bu

11% of ~325 million vs 7% of ~65 million = ~31 million more people using antidepressants in the US than the UK. Also I'd hardly say >10% is reasonably small, but that's a judgement call.