1984

6.1

2009

8.5

1987

8.0

2017

4.9

2022

5.5

2019

5.9

2005

5.7

1955

7.4

2019

6.7

2020

6.2

2011

7.3

2010

6.6

1999

7.2

2003

5.4

2014

7.0

2019

7.7

2014

6.7

1994

7.0

2016

6.7