1958

6.6

1989

5.2

1998

7.3

2023

6.1

1938

7.1

1994

5.7

1955

5.6

2007

5.1

1970

7.1

2012

6.4

2024

7.1

2019

8.1

1991

6.7

1957

7.0

2011

5.9

2000

5.2

1960

7.5

2002

5.8

2005

6.3

2018

6.9