; annual updates Beginning with fiscal year 2021, and annually thereafter, the Secretary shall establish the following prevention services measures based on information and data reported by States that elect to provide services and programs specified in paragraph (1): (i) Percentage of candidates for foster care who do not enter foster care The percentage of candidates for foster care for whom, or on whose behalf, the services or programs are provided who do not enter foster care, including those placed with a kin caregiver outside of foster care, during the 12-month period in which the services or programs are provided and through the end of the succeeding 12-month period. (ii) Per-child spending The total amount of expenditures made for mental health and substance abuse prevention and treatment services or in-home parent skill-based programs, respectively, for, or on behalf of, each child described in paragraph (2). (B) Data The Secretary shall establish and annually update the prevention services measures— (i) based on the median State values of the information reported under each clause of subparagraph (A) for the 3 then most recent years