"• Among people aged 12 or older, the percentage with a past year substance use disorder (SUD) (i.e., alcohol use disorder, illicit drug use disorder, or both) remained stable between 2015 and 2019. Among the 20.4 million people aged 12 or older with a past year SUD in 2019, 71.1 percent (or 14.5 million people) had a past year alcohol use disorder, 40.7 percent (or 8.3 million people) had a past year illicit drug use disorder, and 11.8 percent (or 2.4 million people) had both an alcohol use disorder and an illicit drug use disorder in the past year.