1974

5.9

2020

6.0

2018

6.7

1966

6.2

2009

5.5

2004

6.4

2019

6.4

1986

5.6

1981

7.5

1985

5.3

2001

6.2

2006

6.7

1959

8.1

2021

7.3

2014

5.4

1987

6.7

2022

6.3

2020

5.3

2018

6.9

1989

7.7