With regard to the teacher support provided by the Education, Training and Development Practices Sector Education Authority (ETDP SETA) to each teacher union, (a) what amounts have been transferred over the past three financial years, (b) what is the total amount that has been budgeted for the 2017-18 financial year as grants, (c) what are the conditions linked to these transfers and (d) how is the ETDP SETA ensuring that the transfers are utilised by the teacher unions in accordance with the set conditions?