文中有一句说明很关键。

he following is a list of suicide rates by country according to 2015 data from the World Health Organization (WHO) and other sources, in which a country's rank is determined by its total rate deaths officially recorded as suicides in the most recent available year. The WHO statistics are based on the official reports from each respective country, and therefore, no more accurate than the record-keeping in the specific country.^[1]