(1) How many (a) workers at management level and (b) ordinary workers at each of the nine public enterprises (aa) have been dismissed or (bb) left the service with voluntary packages from (i) 1 January 2006 to 31 January 2008 and (ii) 1 February 2008 to 30 April 2009; (2) on how many management boards does each of the management board members of the nine public enterprises serve?