1968

6.9

1972

6.2

1984

5.7

1998

6.0

1975

6.8

1974

6.5

2019

6.5

1943

6.4

2017

7.0

2005

8.3

2024

7.0

1965

7.5

1959

6.1

1967

6.9

1996

5.9

2004

6.3

2023

7.6

2012

6.4

2022

6.3

1992

6.4