Table 4.

Sample size for Tier 3 site visits.

	2009	2010	2011	Totala
Number of sites	3	6	6	6
Number of site visits	4	7	4	15
Number of participants	71	124	91	286
Number of individual interviews	18	31	15	64
Number of focus groups	12	18	18	48
Number of photographs	86	132	85	303

^aSeveral sites were visited more than once per year.