6.3

2009

6.2

2014

5.4

1987

6.2

1981

6.7

2013

6.1

1993

6.1

2024

7.4

1986

7.6

1968

6.9

2015

5.9

2001

6.9

2021

5.7

1984

6.5

2025

6.8

7.3

1974

6.3

2021

5.6

1943

6.4