Whether any back-up aircraft or helicopters have been used to accompany the (a) President, (b) Deputy President and (c) any specified Ministers in the (i) 2009-10, (ii) 2010-11, (iii) 2011-12 and (iv) 2012-13 financial years; if not; why not; if so, in respect of each specified back-up flight, (aa) what type of aircraft was used, (bb) what was the (aaa) date and (bbb) location of (aaaa) departure and (bbbb) arrival and (cc) what was the (aaaaa) total cost and (bbbbb) breakdown of such cost?