1967

6.5

1969

5.1

2018

6.7

2022

5.5

2017

6.0

1963

6.9

1968

6.9

1981

8.1

2005

6.6

1993

6.1

1962

7.0

2016

5.6

1966

6.3

1994

6.2

1964

7.4

2009

6.6

1971

6.4

2019

8.4

2024

6.5

1984

6.6