1981

8.3

2002

8.4

1993

7.4

1996

9.7

1990

8.0

2020

6.5

2019

4.2

2005

7.4

1995

8.6

2013

6.8

1994

8.3

2018

7.5

2024

7.0

1999

8.1

2019

7.0

2018

0.0

1968

7.7

2025

5.0

2004

8.2

2000

8.0