(1) Which criteria are used to determine whether a function is presidential or not; (2) (a) how many events have been declared as such (i) in the (aa) 2007-08, (bb) 2009-09, (cc) 2009-10, (dd) 2010-11 and (ee) 2011-12 financial years and (ii) since 1 April 2012 and (b) what was been the reason(s) for such decision in each case?