Year FourseamChangeCurve
2009 94.09 86.56 80.17
2010 91.88 85.16 77.99
2011 93.19 86.97 79.92
2012 94.08 87.86 80.70
2013 93.79 86.76 80.25
2014 94.02 86.39 80.30