1988

5.3

2014

7.0

2001

5.4

1992

6.2

2003

5.0

1968

6.9

2019

4.3

2007

9.5

2021

5.2

2024

7.3

2010

4.4

2017

6.8

2020

5.2

2009

4.8

1990

5.3

2014

6.3

2020

6.5

2017

9.5

2007

5.5

2005

6.5