2020
6.3
2013
2018
7.3
5.7
2019
8.2
7.2
6.8
7.1
2017
7
1995
7.9
6.1
4.8
1993
8.6
2016
5.9
8.1
2015
6.6
6.7
6.4
6.2
2014
7.4