1985

6.4

2016

6.4

2016

4.2

2007

6.9

2009

6.2

2009

5.7

2019

7.5

1956

7.1

2006

7.0

2011

6.5

2013

8.1

2011

7.3

2013

7.0

2009

6.6

2007

6.1

1990

5.5

2021

9.2

2015

4.9

1971

7.2

2008

7.3