1966

8.2

2005

7.1

1991

7.1

2003

7.2

2001

6.7

2019

6.9

2019

6.5

1974

5.0

1981

6.9

2017

7.5

1997

6.4

2020

6.7

1967

7.6

1995

7.1

2024

7.4

2000

5.2

1995

7.0

2005

6.6

2002

6.2

1994

7.9