How many (a) houses were built each year since 1994 in terms of the Reconstruction and Development Programme (RDP), (b) of those houses were allocated to (i) black, (ii) Indian, (iii) coloured and (iv) white people and (c) of those houses are currently (aa) owned and (bb) occupied by (i) black, (ii) Indian, (iii) coloured and (iv) white people?