South Dublin County Council

With reference to the document "Breakdown of Social Housing Output by Year" for each year 2015,2016 and 2017: 1.For each unique address(individual property) that was counted by the Council as a new social housing unit,how many of those properties were entered in more than one column and were counted more than once? 2.How many unique addresses were counted three times in the return of new social housing in that year? 3.What was the local authority social housing stock in the county at the end of 2014 and at the end of 2017? 4.What was the average length of time that the "void" properties were empty before being re-let?