2009

8.5

2018

7.4

2001

8.9

1968

6.4

1987

7.4

1990

6.5

2021

7.3

1972

4.0

2022

7.1

2013

4.8

1971

6.3

2011

5.5

2017

5.8

2010

7.2

1996

7.5

2021

7.3

2011

7.2

2008

7.3

2021

6.1