The COVID-19 pandemic may have resulted in an astonishing 20 million years of life lost worldwide, according to estimates from a new study. On average, each person who died lost 16 years of life.

The study researchers — from Pompeu Fabra University in Barcelona, Spain, and the Max Planck Institute for Demographic Research in Rostock, Germany — analyzed data from more than 1.2 million people in 81 countries who have died of COVID-19 so far. (The researchers used information from a database of confirmed COVID-19 cases and deaths known as COVerAge-DB, which includes data from 112 countries. The analysis included all countries with at least one COVID-19 death as of Jan. 6, 2021.) Then, they calculated “years of life lost,” or the difference between a person’s age at death and their life expectancy, using data on life expectancy in these countries.