World Uncertainty Index (WUI). It covers 143 countries—all countries in the world with a population of at least 2 million. It goes back in time, providing data for the past 60 years. The index uses a single source for all countries, which allows us to compare the level of uncertainty across countries. And it captures uncertainty related to economic and political events, regarding both near-term (e.g., uncertainty created by the United Kingdom’s referendum vote in favor of Brexit) and long-term (e.g., uncertainty engendered by the impending withdrawal of international forces in Afghanistan, or tensions between the Democratic People’s Republic of Korea and the Republic of Korea) concerns. Read more