(1) How many scientists (a) were registered and (b) are rated by the National Research Foundation (NRF) (i) in (aa) 2007 and (bb) 2008 and (ii) during the period 1 January 2009 up to the latest specified date for which information is available; (2) whether the number of scientists being rated by the NRF has declined; if not, what is the position in this regard; if so, what is the reason for this decline?