Using the raw historical dataset available on the Freedom House website, we compute and rank the largest decline in the global freedom index from 2007 to 2022 (territories are excluded). For each year, we subtract its index from the prior year’s figure and correct for asymmetries in criteria if needed. The country with the largest decline for each year is listed below:

Data compiled and calculated by the author on basis of data publicly available on Freedom House. Released under CC BY 4.0 license.