The index rates 167 countries by 60 indicators across five broad categories: electoral process and pluralism, the functioning of government, political participation, democratic political culture and civil liberties. It is stricter than most similar indices: it concludes that just 4.5% of the world’s people live in a “full democracy”. However, the overall global score remained stable in 2018 for the first time in three years. Just 42 countries experienced a decline, compared with 89 in 2017. Encouragingly, 48 improved.