2001

6.4

2006

6.8

2008

8.0

2017

3.0

1989

7.2

2020

8.0

2010

6.5

2022

3.8

1967

2.8

2012

6.0

2015

6.4

1975

5.0

1999

2.8

2022

8.0

2023

7.0

1979

6.2

2023

4.0

1993

5.3

2024

6.2