1998

7.3

2022

6.3

2007

5.3

1980

7.6

2001

6.0

1994

8.7

2019

8.1

2001

8.5

2023

8.1

1987

7.3

1997

7.9

2011

6.4

1985

8.3

2007

7.8

2005

6.5

2006

8.2

2000

8.2

2020

7.7

2023

7.0

2024

6.7