1991

8.3

1984

7.3

2005

4.6

1995

8.4

1931

8.1

1980

8.2

2014

5.3

2024

5.2

2000

7.4

2006

5.7

2023

4.0

2013

4.1

1980

1.0

1999

6.3

2025

6.8

1995

6.3

1995

5.5

2006

6.1

1996

7.5

1997

6.5