(a) How many cases of human trafficking did his department prosecute in the (i) 2010-11, (ii) 2011-12, (iii) 2012-13, (iv) 2013-14 and (v) 2014-15 financial years, (b) how many of the specified cases resulted in successful convictions and (c)(i) how many of the specified cases involved female victims and (ii) what was the nationality of the victims identified in each case?