Retirement pay for police, fire, and band members

(a) Any member of the police force, fire department, or band who has been in the service of any county as a member of the police force, fire department, or band for twenty years and less than twenty-five years, upon the member's written application to the board of trustees to be retired, shall be retired from the police force, fire department, or band, and the member shall thereafter receive from the pension system a monthly payment equal to forty per cent of the average monthly compensation for the five years of the member's service, as hereinafter defined, immediately preceding the date of the member's retirement. (b) Any member of the police force, fire department, or band who has been in the service of the county as a member of the police force, fire department, or band for twenty-five years, upon the member's written application to the board to be retired, shall be retired from the police force, fire department, or band and the member shall thereafter receive from the pension system a monthly payment equal to fifty per cent of the average monthly compensation for the five years of the member's service, as hereinafter defined, immediately preceding the date of the member's retirement. (c) Any member of the police force, fire department, or band who has been in the service of the county as a member of the police force, fire department or band for more than twenty-five years, upon the member's written application to the board to be retired, shall be retired from the police force, fire department, or band and the member shall thereafter receive from the pension system a monthly payment equal to fifty per cent of the average monthly compensation for the five years of the member's service, as hereinafter defined, immediately preceding the date of the member's retirement, plus two per cent for each year in excess of twenty-five years, but not in excess of eighty per cent.