200920102011201220132014
January9.513.114.515.013.912.1
February10.213.014.415.113.712.0
March10.913.214.414.913.611.9
April11.513.514.414.813.611.7
May12.113.814.414.713.511.5
June12.213.714.514.813.311.3
July12.513.814.714.713.011.2
August12.613.914.814.712.711.1
September12.914.314.714.512.611.0
October13.014.514.814.412.410.9
November13.014.714.914.212.210.7
December13.114.715.014.112.2