185.27  Roster of retirees.--The secretary of the board of trustees shall keep a record of all persons enjoying a pension under the provisions of this chapter, in which shall be noted the time when the pension is allowed and when the same shall cease to be paid. In this book the secretary shall keep a record of all police officers employed by the municipality and a record shall be kept in such manner as to show the name, address and time of employment of such police officers and when they cease to be employed by the municipality.