2020
7.8
7.6
7.7
8.1
5.3
7.4
6.4
6
8.9
5.9
2019
6.7
8.3
4.3
5.8
6.2
7.9
2017
5.6
7.2
7.1
6.1
7
2018
2013
2016
7.3