6.4
2015
3.5
4.4
7.4
2013
7.3
3.7
6.6
6.5
2020
7.9
2018
4.9
2019
7.5
7
3.9
4.7
3
7.1
5.8
5.6
3.6
8.7
6
2005
8
2
5.9
7.7
5
3.8
7.2
4
1971
5.2
6.8
6.1
0.5
4.6