Year FourseamChangeCurve
2014 3.80 3.67 3.76
2015 3.67 3.58 3.63
2016 3.62 3.50 3.60
2017 2.27 2.14 2.15
2018 3.39 3.28 3.25
2019 3.33 3.30 3.32