Table 1.

The NUHDSS population, 2003–2009

Year	Population monitored during the year			Population on 1st January
	Korogocho	Viwandani	NUHDSS	Korogocho	Viwandani	NUHDSS
2003	29,708	37,496	67,204	23,328	26,105	49,433
2004	32,469	40,739	73,208	25,373	30,009	55,382
2005	32,329	35,994	68,323	26,409	26,673	53,082
2006	32,690	36,987	69,677	26,877	28,563	55,440
2007	32,186	38,998	71,184	26,996	30,163	57,159
2008	31,904	41,182	73,086	25,741	31,605	57,346
2009	33,880	44,276	78,156	26,277	34,392	60,669
Mean number	32,167	39,382	71,548	25,857	29,644	55,502
% Change 2003–2009	14.04%	18.08%	16.30%	12.64%	31.74%	22.73%