1977

6.5

1961

7.7

1973

5.7

2012

6.4

2023

7.1

2018

6.0

2023

8.4

2011

6.6

2011

6.9

2017

6.5

2014

4.2

2013

6.5

1996

9.4

2021

8.3

2022

4.5

1990

4.7

2008

7.2

2016

4.9

2014

7.7

2011

5.1