2020

7.4

2015

6.4

1975

4.5

1967

6.5

1988

5.4

2009

5.8

1996

5.9

2004

9.5

2017

6.1

2011

7.2

1993

6.6

2019

7.2

2012

5.7

2023

10.0

1971

6.8

2011

6.8

2024

7.1

2008

6.8

1957

7.6

2007

9.8