What was the (a) total amount and (b) breakdown of such amounts spent (i) by each specified department and (ii) on each specified service provider in respect of the transversal supply and delivery of toilet paper, paper towels, facial tissues, paper serviettes, disposable wipes, dressing towels, draw pads, medical underpads, baby and adult diapers and inconvenience pads (aa) in the (aaa) 2010-11, (bbb) 2011-12, (ccc) 2012-13, (ddd) 2013-14 and (eee) 2014-15 financial years and (bb) since 1 April 2015?