2010
4.8
2018
5.7
2017
6.1
2015
6.1
2012
5.7
2018
6.6
2016
6.2
2009
4.9
2018
8.4
2017
3.6
2008
6.0
2018
6.1
2019
6.0
2019
7.0
1998
5.5
2019
6.7
2019
5.3
2019
6.8
2019
5.6
2017
2.7
2019
2.0
2019
5.0
2019
6.1
2012
2.4
2019
5.3
2019
5.7
1993
6.7
2002
6.0