WASHINGTON (TND) — The number of kids in America living with autism is apparently growing at a considerable rate, according to a new study.

Published in JAMA Pediatrics on Monday, the new study reveals a nearly 52% increase in autism spectrum disorder diagnoses among children in the United States between 2017 and 2020.

The National Institute of Mental Health says that “autism spectrum disorder (ASD) is a neurological and developmental disorder that affects how people interact with others, communicate, learn, and behave.” One out of every 30 kids in America has that developmental disorder, the new study claims.

Researchers used data from the annual National Health Interview Survey to show ASD rates in American kids have been rising since 2014, only dipping slightly in 2016 and 2017 before resuming the increasing pattern all the way to 2020. The Centers for Disease Control and Prevention (CDC) conducts the National Health Interview Survey every year.