1997
6.1
2020
6.2
1992
4.8
2020
5.7
2016
6.6
2019
5.8
2015
5.9
2008
6.4
2003
6.2
2009
6.4
2012
6.5
2005
7.4
2020
7.0
2017
6.1
2017
6.4
2009
6.9
2017
6.2
2015
5.7
2020
6.7
2020
6.3
2015
6.6
2020
6.2
2020
6.2
2012
7.3
2015
6.6
2006
5.5
2020
6.5
2013
5.4