2017

6.1

2006

5.8

2014

6.9

2019

6.1

2017

6.8

2010

8.2

2017

7.3

1995

7.2

1994

8.5

2008

7.6

2015

7.6

2014

6.1

2014

8.5

1997

7.9

2018

7.4

2014

7.8

1968

8.1

2016

6.3

2006

7.9

1989

8.3