With reference to his reply to question 266 on 6 March 2017, (a) how many Labour Court cases was each national department involved in (i) in the (aa) 2014-15 and (bb) 2015-16 financial years and (ii) since 1 April 2016, (b) how many of the specified cases (i) were concluded and (ii) are still pending in each case and (c) what is the total amount spent on legal proceedings in each case?