1977

6.7

2017

5.9

2016

9.7

2024

5.2

2025

5.2

1971

5.6

2023

4.0

1988

5.0

1995

7.0

2012

6.4

1989

6.8

2001

10.0

2017

10.0

2024

6.0

2001

8.5

1970

5.0

2015

6.7