8.0

2013

7.5

2014

7.1

1984

6.5

1986

6.2

1988

4.8

1978

5.7

2019

6.2

1975

7.4

2016

5.3

3.6

1992

6.2

2003

7.3

1956

6.2

2025

5.9

1987

5.9

1999

5.9

2006

6.0

5.6

2022

8.6