The U.S. Census Bureau Thursday said its 2020 headcount missed American Indian, Black and Hispanic residents at higher rates than a decade ago.

The Census Bureau’s post-census survey measures whether certain populations were undercounted or overrepresented. The report revealed a national net undercount of 5.6% for American Indians and Alaska Natives living on reservations. Native Americans were undercounted in the 2010 census by about 5%.