8.0

1973

6.3

2013

6.4

2020

6.7

2012

6.0

2004

7.3

2021

6.1

1997

4.0

2009

8.5

2019

5.0

2014

5.9

1968

8.0

1964

5.3

2011

9.0

2022

6.0

2021

9.8