867 pages. October 2022. The 2015-2020 Mental Health Annual Report identified 6,945,521 individuals in mental health treatment facilities that report to individual state administrative data system. The top five diagnoses in 2020 were depressive disorders (26.4%), anxiety disorders (20.2%), trauma- and stressor-related disorders (18.6%), schizophrenia and other psychotic disorders (11.0%), and bipolar disorders (10.3%).