95 94.43 94 93.20 93.51 93 92 91.39 91 90.25 90 89 88 2015 2016 2017 2018 2019 5.6 5.46 5.4 5.12 5.2 5.02 4.86 5 4.75 4.8 4.6 4.4 4.2 2015 2016 2017 2018 2019 19