(a) The custodians of municipal and county treasuries may deposit funds collected under this article in interest-bearing accounts and retain for the municipality or county interest earned on the funds. The custodians shall keep records of funds received and disbursed under this article and shall provide a yearly report of all funds received and disbursed under this article to the comptroller, the Department of Public Safety, and to each agency in the county served by the court that participates in or maintains a certified breath alcohol testing program. The comptroller shall approve the form of the report.