A HDI below 0.5 is considered to represent "low development". All 22 countries in that category are located in Africa. The highest-scoring Sub-Saharan countries, Gabon and South Africa, are ranked 119th and 121st, respectively. Nine countries departed from this category this year and joined the "medium development" group.
Under what number does a country need to fall in order to be considered a "high development" country?
{'text': '0.5', 'answer_start': 12}