2020

6.8

2013

6.5

2004

5.7

2009

6.5

1996

5.8

1961

7.2

1956

7.9

2011

7.1

2018

6.7

1999

8.0

2021

4.5

2009

4.6

2014

5.7

2011

5.8

2023

7.8

2011

6.7

2012

6.1

1993

9.0

2017

7.0

2014

8.0