As the U.S. continues its COVID-19 vaccination program, the Return to Normal Index measures human activity data relative to prepandemic levels. The index is constructed by our data scientists and fundamental analysts and tracks activities in the U.S. including travel, returning to work and school, brick-and-mortar shopping and eating out. By design, the index is focused on measuring components of daily life rather than economic indicators like GDP growth. The percentage level moves closer to 100 as daily life normalizes, and our analysts update it monthly.