With regard to sections (a) 20(1), (b) 20(1A)(a) and (c) 21(1A)(b) of the Sexual Offences Act, Act 23 of 1957, as amended, how many (i) arrests have been made, (ii) cases have been opened, (iii) dockets were referred to the National Prosecuting Authority for a decision and (iv) dockets were finalised through an admission of guilt fine (aa) in each of the past five financial years and (bb) since 1 April 2016?