1970

5.5

2007

4.6

2009

6.1

2024

5.7

2010

6.3

2025

4.2

1976

5.1

2009

6.9

2003

7.0

1981

6.0

2013

4.3

2022

5.3

2003

4.0

2009

5.0

2014

6.5

2024

6.8

1965

7.5

2023

6.0

1985

3.9

2024

6.9