Year FourseamChangeCurve
2009 93.74 86.25 79.82
2010 91.87 85.16 77.98
2011 93.18 87.06 79.92
2012 94.07 87.82 80.67
2013 93.75 86.70 80.21
2014 94.01 86.36 80.32