What is the total number of SA Police Service members who (a) took and (b) passed a firearm proficiency test (i) in the (aa) 2014-15, (bb) 2015-16, (cc) 2016-17 (dd) 2017- 18, (ee) 2018-19 financial years and (ii) since 1 January 2019 up to the latest specified date for which information is available in each province?