This database contains estimates of the change (hence the Δ) in the shares of a jurisdiction’s imports that are covered by trade distortions implemented by the importing nation and by third-party governments. Taking 1 November 2008 as the starting point, the estimates available refer to the change in goods imports covered by trade distortions for each year from 2009 to 2023. Estimates are provided for 243 customs territories, with information provided for certain regional trade agreements.