1997

8.2

2024

7.3

1998

5.8

1995

7.2

1991

7.1

1961

7.5

1979

6.8

2004

7.8

1987

6.0

2020

6.7

1993

6.6

2011

6.1

2004

8.2

1975

7.4

2018

0.0

1997

5.8

1961

7.2

2018

8.3

2012

6.7

2025

8.7