6.8

2018

5.9

1993

6.1

2013

6.1

1968

6.9

1999

7.2

2023

9.2

2011

7.0

1972

6.4

2006

9.8

1986

5.8

1969

5.1

2024

9.6

2009

7.2

2013

5.9

1965

6.7

1994

7.4

2021

8.3

2014

7.0