How many separate mayors have led each council per council term, on average?
Analysis covers the 25 most populous councils in NSW and their pre-amalgamation predecessors. A council is included where all mayors were known for a council term. When a council was using a directly-elected mayor, that council was excluded from the analysis. Data is missing for Fairfield pre-1995, Marrickville pre-1987, Sutherland pre-1999.