Year FourseamChangeCurveCutter
2013 6.90 6.85 6.83 6.73
2014 6.85 6.74 6.65 6.62
2015 6.71 6.66 6.55 6.49
2016 6.84 6.78 6.69 6.65
2017 6.70 6.69 6.52 6.54