"February 2013"	"May 2010"	"August 2011"
27.5	28.0	30.5
27.5	28.0	30.5
27.5	28.0	30.5
27.5	28.0	30.5
27.5	29.8	30.5
27.5	29.6	30.5
26.6	29.6	30.5
26.9	29.6	30.5
26.9	29.6	30.7
26.5	28.9	30.7
26.8	28.9	30.7
	28.9	30.7
	28.9	30.7
	28.9	30.7
	28.9	30.7
	28.9	30.7
	28.0	30.7
	28.8	30.7
	28.8	31.1
	28.8	31.1
	29.8	31.1
	30.2	29.1
	29.8	29.4
	29.8	29.7
	29.6	29.7
	29.6	30.0
	29.6	30.2
	29.6	30.2
	27.6	30.1
	27.5	
	27.5	
	27.6	
	27.9	
	28.2	
	28.1	
	28.3	
	28.3	
	28.3