What (a) is the detailed breakdown of the current average salary for each of the 16 salary bands in the Public Service, (b) total amount will be spent annually in terms of the latest Public Service wage agreement on paying public servant salaries in each of the 16 salary bands, (c) total amount of that amount will be spent annually on employees in each specified salary band in the Public Service and (d) is the breakdown of the total number of employees currently employed in each of the 16 salary bands in the Public Service?