"feb. 2010-2013" "may 2010-2013" "aug. 2010-2013" 26.9 28.3 29.6 27.0 28.3 29.7 26.8 28.3 29.7 27.1 28.1 29.7 27.0 28.1 30.1 26.5 28.0 29.5 26.7 28.5 30.1 26.4 28.7 30.1 26.4 29.2 29.7 26.4 27.6 29.7 26.6 27.7 30.0 26.6 27.6 30.2 26.1 27.6 30.2 26.0 27.9 30.1 26.1 28.0 30.2 26.2 28.4 30.1 26.3 28.6 30.1 26.3 28.6 29.4 26.5 27.4 29.3 26.5 27.4 29.3 26.8 28.1 29.0 26.3 28.0 29.3 26.4 28.0 29.0 26.6 28.0 29.5 26.8 27.9 29.5 26.7 27.9 29.4 26.5 27.9 29.3 26.8 27.7 29.4 26.7 27.6 29.4 26.4 27.8 29.4 26.6 28.0 28.9 26.7 27.9 29.4 26.8 28.5 29.5 26.8 28.6 29.8 28.6 28.2