2010
6.8
2019
6.6
2007
6.5
2006
6.9
2006
6.1
2015
4.1
1996
6.6
2018
3.9
2019
6.1
2003
7.9
2018
6.9
1980
6.3
1966
7.0
2019
6.4
2018
6.5
1957
8.4
2017
6.3
2019
4.0
2019
5.5
2019
5.0
2019
5.7
2019
6.9
2019
5.1
2019
5.5
1992
6.8
2012
6.2
2014
5.6
2016
3.2